Function comparison tables PRG-270 PRG-280 PRG-510/550 PRG-260 PRG-250 PRG-240 TRIPLE SENSOR Bearing Memory Cumulative Ascent / Descent Memory Barometer Atmospheric Pressure Tendency Graph Thermometer Solar-powered Radio-controlled Tough Movement Smart Access Tide Graph Moon Data Sunrise, Sunset Time World Time 29 time zones (29 cities) 31 time zones (48 cities) 31 time zones (48 cities) 31 time zones (48 cities) 29 time zones (29 cities) 31 time zones (48 cities) 31 time zones (48 cities) 31 time zones (48 cities) Stopwatch 1/10-second 1/10-second Alarm 5 daily or one-time alarms 5 daily or one-time alarms Duplex LC Display Light Double LED light (Full auto LED light) Full auto LED light Full auto LED light Auto LED light Full auto LED light Full auto EL light Full auto EL light Full auto EL light Water Resistant 100-meter 100-meter 100-meter 200-meter 100-meter 200-meter 200-meter 100-meter Low-temperature Resistant Solar-powered This proprietary CASIO solar-powered battery-recharging system assures stable operation of various power-hungry functions, including dial lighting, alarm, stopwatch and measurement functions. Radio-controlled This radio-controlled timekeeping technology can receive standard time-calibration signals from all 6 transmission stations worldwide and correct the time for the Japanese, American, European and Chinese regions. Tough Movement This radio-controlled, solar-powered analog movement deploys four cutting-edge functions to boost the reliability of the radio-controlled, solar-powered watch. Radio-controlled Solar-powered Hybrid Mount Construction Auto Hand Home Position Correction Smart Access Smart Access makes it easy to operate CASIO's multi-function watches. Simply pulling out and rotating the crown provides intuitive control over world time city selection and various other functions. Designs and specifications are subject to change without notice. Actual colors may differ somewhat from their appearance in this catalog. No images, text or other contents of this catalog may be published on the Internet or in any other media without permission. Printed in Japan BS1407-050001A http://www.casio-watches.com/ www.casio-intl.com/asia-mea/en/wat/protrek/

Feel the Field The advanced Triple Sensor measures directions, atmospheric /temperatures and altitudes, and a direct button provides intuitive control. With a capability newly added, moreover, PRO TREK is a reliable partner for mountaineering and virtually any other outdoor activity. PRO TREK is commemorating the 20th anniversary of its birth in 2014 by launching the digital/analog combination model with on board. The watch that perceives changes in nature s moods, PRO TREK never stops evolving. History of PRO TREK Outdoor gear evolving with innovative technologies 2003 PRG-60 1st PRO TREK with analog movement 2010 PRW-5000 1st PRO TREK with Tough Movement 2012 PRX-7000T Smart Access-equipped analog model [ 2014 ] Combination model with and Smart Access [ 1995 ] [ 1996 ] [ 1998 ] [ 2000 ] [ 2002 ] [ 2005 ] [ 2007 ] [ 2008 ] [ 2009 ] ATC-1100 1st Triple Sensor model DPX-500 1st PRO TREK branded model PRT-40 Auto EL backlight installed PRT-4000 1st PRO TREK with full-metal case PRG-40 measurement up to 10,000 m PRG-50 Triple Sensor, Ver. 2 installed PRW-1000 1st solar-powered, radio-controlled PRO TREK PRW-1300 Thin case realized by high-density mounting technology PRW-1500 With 200-meter water resistance specification for marine activities PRW-2000 Slim-lined MULTIBAND 6 radio-controlled, solar-powered model 1994 Triple Sensor, Ver. 1 PRO TREK 1 Triple Sensor debuted in 1994. Operating on battery power, it revolutionized the wristwatch with its ability to measure directions, barometric /altitude and temperatures. 2002 [ 2013 ] Digital model with installed 2013 Triple Sensor, Ver. 2 [ Stage 1 ] [ Stage 2 ] Solar-powered sensor measurement realized with installation of Tough Solar. Pressure sensor diameter reduced from φ5.8 to φ4.0 mm, case downsized to 60%. Size reduction accompanied by improvement in sensor measurement accuracy. Miniaturized magnetic sensor and higher-precision sensor developed.faster, more precise sensor measurements realized. 2 PRO TREK [ 1994 ]

PRG-270 TRIPLE SENSOR, Ver.3 SMART ACCESS TOUGH MOVEMENT SOLAR-POWERED RADIO-CONTROLLED 100-METER WATER RESISTANCE Using analog intuition and digital precision to monitor nature s changes. Featuring faster, lengthier, more accurate observation of nature. Besides displaying directions, atmospheric /temperatures and altitudes, this Triple Sensor model employs the second hand to indicate north and relative differences in altitudes and atmospheric. It also keeps wearers informed of changes in natural phenomena by such means as sounding an alarm to alert them to sudden changes in atmospheric. (display example) 60-second continuous direction measurement measurement interval 1 sec.* Measurement unit 1 m differential indicator -30 m.) 26.4 C.) 1,228 m.) Bearing angles Tough Movement Smart Access -3hPa.) differential indicator NW.) Sudden atmospheric change alarm 16 directions -1 Barometer / Thermometer 1013 hpa.) *Takes altitude measurements at 1-second intervals for the first 3 minutes after the start of measurement and at 5-second or 2-minute intervals thereafter (switchover possible). - Sensor functional innovations measurement 3 Pressure measurement Direction measurement Measurement unit Shortest measurement interval*2 Measurement accuracy*2 Measurement accuracy*2 Continuous measurement duration *2 Measurement accuracy under constant temperature Triple Sensor, Ver. 2 5m 5.0 seconds change x 2% differential x 2% 20 seconds - Sensor power savings Pressure sensor Direction sensor 1m 1.0 second change x 0.3% differential x 0.3% 60 seconds Power reduction 1/7 earlier version level 1/10 earlier version level Y-1 Y-1A [ Carbon fiber insert resin band ] [ Carbon fiber insert resin band ] Tough Movement Smart Access Tough Movement Smart Access [Detailed Specifications] Radio-controlled Double LED light (Full auto light) Solar-powered *Approx. battery operating time: 6 months (with no exposure to light after full charge) 100-meter Measures and displays direction as one of 16 points Measurement range: 0 to 359 Measurement unit: 1 60 seconds continuous measurement Hand indication of north Bidirectional calibration Magnetic declination correction Measurement range: -700 to 10,000 m (-2,300 to 32,800 ft.) Measurement unit: 1 m (5 ft.) Hand indication of altitude differential Manual memory measurements (up to 30 records, each including altitude, date, time) Auto log data (High/Low altitudes, cumulative ascent and descent) Others: Relative altitude readings (±100 m/±1,000 m) Selectable measurement interval: 5 seconds or 2 minutes *1 second for first 3 minutes only *Changeover between meters (m) and feet (ft.) Barometer Display range: 260 to 1,100 hpa (7.65 to 32.45 inhg) Hand indication of differential Barometric tendency information alarm (beep and arrow indicate significant changes in ) *Changeover between hpa and inhg Thermometer Display range: -10 to 60 C (14 to 140 F) Display unit: 0.1 C (0.2 F) *Changeover between Celsius ( C) and Fahrenheit ( F) Low-temperature resistant (-10 C/14 F) World Time: 29 time zones (29 cities + coordinated universal time), One-touch UTC time zone access, Daylight saving on/off, Home city/world time city swapping stopwatch Countdown timer 5 daily alarms Hourly time signal Hand shift feature (manual or auto; during altitude, barometric, and temperature measurement) Battery level indicator Power save function Full auto-calendar (to year 2099) 12/24-hour format Button operation tone on/off 4 315.)

TRIPLE SENSOR, Ver.3 SMART ACCESS TOUGH MOVEMENT SOLAR-POWERED RADIO-CONTROLLED 100-METER WATER RESISTANCE PRG-270 Slim design Soft urethane band [ ] Riding lightly on the wrist Exceptional fit and durability A combination of miniaturized operating motors and high-density mounting technology achieves slimming of the case to just 12.8 mm, even with multiple functions installed. The band retains its comfortable wearability while achieving high tensile strength and durability. A band cover is installed on the inner surface of the band to assure a natural fit on the wrist. Carbon fiber insert resin band [ Y ] High-toughness band structure Carbon fiber is molded into the urethane resin band material. This assures high strength and durability while maintaining the band s natural wearability. Hand-retraction function Tough Movement World Time Unobstructed LCD data display Adding further reliability to the radio-controlled, solar-powered chronograph Himalayan time display Since each hand is driven independently, individual hands can be momentarily retracted from above the LCD during measurement to avoid interfering with data reading. This radio-controlled, solar-powered analog movement deploys four cutting-edge functions to boost the reliability of the radio-controlled, solar-powered watch. Double LED light (Full auto LED light) Illuminating natural phenomena in the dark A pair of LEDs irradiate the hands and LCD with bright white light. This combines with luminescent treatment of the indications to assure remarkable visibility under low-light conditions. Capable of displaying the times in major cities worldwide, including Kathmandu, Nepal, a city nestled among eight 8,000-meter peaks. Hybrid Mount Construction Auto Hand Home Position Correction Radio-controlled & solar-powered 100-meter Exploring nature s world powered by light No worries about wetness Converts even faint light into power to achieve stable operation of multiple functions, and receives time-calibration signals from any of six transmission stations worldwide to correct the time automatically. Rechargeable battery Charging Power supply The 100-meter specification exhibits its usefulness in situations from river trekking to sudden storms. Solar panel Photo shows Y-1A. Easy control over multiple functions 5 Installation of an easy-lock electronic crown switch realizes intuitive control of multiple functions. Simple crown operation handles functions such as altitude compensation, alarm/timer setting, and switching among Home Time and other World Time city times. tendency alarm An alarm alert to sudden weather changes gives you time to make advance preparations When atmospheric changes requiring caution are detected (rapid fall or rise in, transition from sustained high or low ), a beeping tone sounds an alert. An arrow on the display also flashes a warning. tendency information Indicator Sudden drop in Sudden rise in Sustained rise in, now turning downward (high- system passing) Sustained drop in, now turning upward (low- system passing) 6 Smart Access

TRIPLE SENSOR, Ver. 3 SOLAR-POWERED RADIO-CONTROLLED 100-METER WATER RESISTANCE Slim-lined MULTIBAND 6 radio-controlled, solar-powered model with on board. PRG-270 Large direct buttons Designed for quick measurement with a single push, the buttons are enlarged to assure accurate operation, even when wearing gloves. Barometer / Thermometer Function icons for intuitive button differentiation Icons positioned near the various direct buttons facilitate intuitive identification of their functions, which include direction, altitude and atmospheric measurement. Soft urethane band The band offers a smooth, supple fit, despite its high-level stretch-resistance and durability. Solar-powered This proprietary CASIO solar-powered battery-recharging system assures stable operation of various power-hungry functions, including dial lighting, alarms, stopwatches and measurement functions. Triple Sensor, Ver.3 Barometer / Thermometer Measures bearings continuously for 60 seconds. Measures altitudes to the nearest meter at 1-second intervals.*1 Sudden atmospheric change alarm. Direction angles 295.) West -1 Radio-controlled 0 to 359 8,026m.) 16 directions WNW.) tendency graph Atmospheric 896 hpa.) tendency display This radio-controlled timekeeping technology can receive standard time-calibration signals from all 6 transmission stations worldwide and correct the time for the Japanese, American, European and Chinese regions. tendency alarm South Atmospheric differential graphic East Graphic indication of north, south, east and west 28.1 C.) An atmospheric tendency alarm has been installed to alert wearers of any notable change, such as a sudden drop or rise, in atmospheric. Full auto LED light (Super Illuminator) Indicator Sudden drop in The light detects illumination levels and activates a high-brightness LED automatically with just a tilt of the wrist in low-light conditions. Sudden rise in Sustained rise in, Sustained drop in, now turning downward now turning upward (high- system passing) (low- system passing) 100-meter *1 Takes measurements every second for the first 3 minutes and every 5 seconds or 2 minutes thereafter(selectable) -1A -2 T-7 [ Titanium band ] 7 [Detailed Specifications] Radio-controlled Full auto LED light (Super Illuminator) Solar-powered *Approx. battery operating time: 7 months (with no exposure to light after full charge) 100-meter Measures and displays direction as one of 16 points Measurement range: 0 to 359 Measurement unit: 1 60 seconds continuous measurement Graphic direction pointer Bidirectional calibration Magnetic declination correction Bearing memory Measurement range: -700 to 10,000 m (-2,300 to 32,800 ft.) Measurement unit: 1 m (5 ft.) Manual memory measurements (up to 30 records, each including altitude, date, time) Auto log data (High/Low altitudes, auto cumulative ascent and descent) *Changeover between meters (m) and feet (ft.) -2B -4B -9B Barometer Display range: 260 to 1,100 hpa (7.65 to 32.45 inhg) differential graphic Barometric tendency information alarm (beep and arrow indicate significant changes in ) *Changeover between hpa and inhg Thermometer Display range: -10 to 60 C (14 to 140 F) Display unit: 0.1 C (0.2 F) *Changeover between Celsius ( C) and Fahrenheit ( F) Low-temperature resistant (-10 C/14 F) World Time: 31 time zones (48 cities + coordinated universal time), Daylight saving on/off Sunrise, sunset time display 1/10-second stopwatch Countdown timer 5 daily alarms Hourly time signal Battery level indicator Power save function Full auto-calendar (to year 2099) Button operation tone on/off 8

PRG-270 TRIPLE SENSOR, Ver. 3 SOLAR-POWERED 100-METER WATER RESISTANCE PRG-270 Equipped with Tough Solar renewable power and. Large direct buttons Designed for quick measurement with a single push, the buttons are enlarged to assure accurate operation, even when wearing gloves. Barometer / Thermometer Measures bearings continuously for 60 seconds. Measures altitudes to the nearest meter at 1-second intervals.*1 Sudden atmospheric change alarm. Direction angles 0 to 359 295.) Digital Compass 8,026 m.) WNW.) tendency graph Atmospheric 896 hpa.) tendency display West Barometer / Thermometer 16 directions Atmospheric differential graphic South East Graphic indication of north, south, east and west 28.1 C.) *1 Takes measurements every second for the first 3 minutes and every 5 seconds or 2 minutes thereafter(selectable) Case Design Solar-powered Raised metal parts bordering the sensors add further robustness to the case. PRG-270-1 This proprietary CASIO solar-powered battery-recharging system assures stable operation of various power-hungry functions, including dial lighting, alarms, stopwatches and measurement functions. tendency alarm An atmospheric tendency alarm has been installed to alert wearers of any notable change, such as a sudden drop or rise, in atmospheric. Indicator Sudden drop in Sudden rise in Sustained rise in, now turning downward Sustained drop in, now turning upward Full auto LED light (Super Illuminator) The light detects illumination levels and activates a high-brightness LED automatically with just a tilt of the wrist in low-light conditions. (high- system passing) (low- system passing) PRG-270-1A PRG-270 9 PRG-270-4 PRG-270-7 PRG-270D-7 [ Stainless steel band ] [Detailed Specifications] Full auto LED light (Super Illuminator) Solar-powered *Approx. battery operating time: 9 months (with no exposure to light after full charge) 100-meter Measures and displays direction as one of 16 points Measurement range: 0 to 359 Measurement unit: 1 60 seconds continuous measurement Graphic direction pointer Bidirectional calibration Magnetic declination correction Bearing memory Measurement range: -700 to 10,000 m (-2,300 to 32,800 ft.) Measurement unit: 1 m (5 ft.) Manual memory measurements (up to 30 records, each including altitude, date, time) Auto log data (High/Low altitudes, auto cumulative ascent and descent) Reference altitude setting *Changeover between meters (m) and feet (ft.) Barometer Display range: 260 to 1,100 hpa (7.65 to 32.45 inhg) differential graphic Barometric tendency information alarm (beep and arrow indicate significant changes in ) *Changeover between hpa and inhg Thermometer Display range: -10 to 60 C (14 to 140 F) Display unit: 0.1 C (0.2 F) *Changeover between Celsius ( C) and Fahrenheit ( F) Low-temperature resistant (-10 C/14 F) World Time: 31 time zones (48 cities + coordinated universal time), Daylight saving on/off Sunrise, sunset time display 1/10-second stopwatch Countdown timer Hourly time signal Battery level indicator Power save function Full auto-calendar (to year 2099) Button operation tone on/off 10 PRG-270 100-meter

PRG-280 TWIN SENSOR 200-METER WATER RESISTANCE Twin Sensor-equipped for direction and temperature measurement. 200-meter supporting wider-ranging outdoor activities. Multi-layer dial Register ring Oversized direct button A 3-layered dial structure gives the face an appearance of depth. 3D hour markers and a recessed LCD and inset dial enhance visibility. Rotating the ring inscribed with 16 directions and angles registers directions in memory. Its grip protrusions and anti-slip surface assure easy operability. The frequently used direction measurement function is provided with an independent control button. Its large size permits ergonomic operation, even when wearing gloves. Super Illuminator Twin Sensor Equipped for both direction measurements (with the second hand pointing north) and temperature measurements. Clear measurement readings are displayed on the LCD and by the analog inset dial hand. Thermometer 20-second continuous direction measurement measurement range -10 to 60 C (14 to 140 F) Direction angles 23.4 C.) 0 to 359 90.) Super Illuminator illuminates the dial vividly with brilliant light. Clear visibility is assured after dark. 200-meter A 200-meter specification provides ample protection during everything from sudden storms to white water rafting and marine sports. 16 directions E.) Bearing Memory Destination bearing recorded and displayed graphically Recorded destination bearing displayed Destination bearing (Target direction bearing left 30.) Recorded destination direction angle 90.) 200-meter PRG-280-2 PRG-280D-7 200-meter 200-meter [ Stainless-steel band ] PRG-280 11 [Detailed Specifications] Auto LED light (Super Illuminator) 200-meter Measures and displays direction as one of 16 points Measurement range: 0 to 359 Measurement unit: 1 20 seconds continuous measurement Hand indication of north Bidirectional calibration Magnetic declination correction Bearing memory Thermometer Display range: -10 to 60 C (14 to 140 F) Display unit: 0.1 C (0.2 F) *Changeover between Celsius ( C) and Fahrenheit ( F) Low-temperature resistant (-10 C/14 F) World Time: 31 time zones (48 cities + coordinated universal time) stopwatch Countdown timer Hourly time signal Full auto-calendar (to year 2099) Button operation tone on/off 12 PRG-280 PRG-280-1

COMBINATION PRG-510/550 Sensor measurement display by analog hand and LCD. TRIPLE SENSOR SOLAR-POWERED 100-METER WATER RESISTANCE PRG-510T-7 [ Titanium band ] 100-meter water resistant Large direct buttons The oversized direct buttons permit one-push measurement. Face design The dial is set off by a second hand with a compass needle design and a large hour hand with simple styling. Its easy legibility enables at-a-glance reading of time and measurement data. A Neobrite luminous coating is applied to the hour and minute hands, moreover, for optimal nighttime visibility. Triple Sensor + Digital/Analog Indicator This Triple Sensor model is equipped to measure directions, atmospheric /altitudes and temperatures. It makes information gathering intuitive by employing independently operated analog hands to show the time, while simultaneously displaying sensor measurement results on a digital LCD. World Time Bearing angle 315.) Selectable display of a bearing or angle in the 12 o clock direction 16 directions NW.) Solar-powered differential indicator +20 m or +200 m.) ±0 m 500 m.) tendency graph This proprietary CASIO solar-powered battery-recharging system assures stable operation of various power-hungry functions. The World Time function indicates the time difference between your current location and the mountains of Kathmandu. 100-meter Barometer / Thermometer differential indicator +1hPa.) ±0hPa 988 hpa.) 10 C.) or temperature indication selectable *Example based on PRG-510 Full auto LED light (Super Illuminator) The light detects illumination levels and activates a high-brightness LED automatically with just a tilt of the wrist in low-light conditions. COMBINATION 13 PRG-510-1 PRG-550-1A1 PRG-550-1A4 PRG-550-1A9 PRG-550G-1 [ Leather / Cloth band ] [Detailed Specif ications] Full auto LED light Solar-powered 100-meter Digital Compass Measures and displays directions as one of 16 points Measurement range: 0 to 359 Measurement unit: 1 20 seconds continuous measurement Hand indication of north Bidirectional calibration and northerly calibration function Magnetic declination correction Measurement range: -700 to 10,000 m (-2,300 to 32,800 ft.) Measurement unit: 5 m (20 ft.) Hand indication of altitude differential Manual memory measurements (up to 14 records, each including altitude, date, time) High / Low memory Total Ascent / Descent memory Reference altitude setting *Changeover between meters (m) and feet (ft.) Barometer Display range: 260 to 1,100 hpa (7.65 to 32.45 inhg) Display unit: 1 hpa (0.05 inhg) Hand indication of differential Atmospheric change indicator *Changeover between hpa and inhg Thermometer Display range: -10 to 60 C (14 to 140 F) Display unit: 0.1 C (0.2 F) *Changeover between Celsius ( C) and Fahrenheit ( F) Low-temperature resistant (-10 C/14 F) World Time: 29 time zones (29 cities + coordinated universal time), Daylight Saving on/off stopwatch Countdown timer Hourly time signal Battery level indicator Power save function Full auto-calendar (to year 2099) Button operation tone on/off 14 COMBINATION

DIGITAL PRG-260/250/240 Dual-layered LCD permitting varied displays of measurement and other data. TRIPLE SENSOR SOLAR-POWERED 200-METER WATER RESISTANCE (PRG-260/250) 100-METER WATER RESISTANCE (PRG-240) Large direct buttons The oversized direct buttons permit one-push measurement. Triple Sensor Triple Sensor models are equipped with direction, atmospheric /altitude and temperature sensors. Dual-layer LCD The dual-layer LCD displays data of various kinds, enabling graphic display of the results compiled by multiple functions. Barometer / Thermometer West Graphic indication of north, south, east and west Displays the altitude difference from a reference point to your current location. Icon employed to display changes in atmospheric for use in predicting the weather Register ring The register ring s rotating mechanism remembers directions for you. East South Bearing memory function for storing the direction to a target bearing Magnetic declination correction function for adjusting the bearing standard from magnetic to true north Graphic display of recent altitude tendencies based on automatic measurements taken every 2 minutes (or 5 seconds) differential indicator The Barometer measures the atmospheric every two hours automatically and displays the recent atmospheric trend and current graphically. The Thermometer employs a digital sensor to keep you informed of the temperature wherever you go. *Example based on PRG-250 PRG-250T-7 [ Titanium band ] 200-meter Tide Graph Moon Data Stainless screws A large, shock-resistant screw structure connects the case lugs to the band. Sunrise, Sunset time display [PRG-260/240] The Sunrise, Sunset time display is a convenient tool for planning climbs. Tide Graph/Moon Data [PRG-250] Tide Graph/Moon Data are practical features for fishing and other marine activities. Solar-powered This proprietary CASIO solar-powered battery-recharging system assures stable operation of various power-hungry functions. Current time (Flashing) Sunset time (24-hour format) Sunrise time Moon Data display of moon age and shape Current date Sunrise time (24-hour format) Sunset time Tide Graph displaying tidal information 200-meter [PRG-260/250] The 200-meter water resistant design provides a high level of security, whether in stormy weather or during such vigorous water sports as rafting or yacht racing. [PRG-250] Icons display changes in atmospheric for use in predicting the weather. Sudden drop in Sudden rise in Sustained rise in, now turning downward (high- system passing) Full auto EL light Full auto EL light that senses illumination levels and switches on automatically with just a tilt of the wrist. Sustained drop in, now turning upward (low- system passing) PRG-260-1 200-meter PRG-260-2 200-meter PRG-250-1 200-meter Tide Graph Moon Data PRG-250B-3 [ Leather/Cloth band ] 200-meter Tide Graph Moon Data PRG-240-1 100-meter PRG-240T-7 [ Titanium band ] 100-meter DIGITAL 15 [Detailed Specifications] Full auto EL light Solar-powered 200-meter (PRG-260/250) 100-meter (PRG-240) Measures and displays direction as one of 16 points Measuring range: 0 to 359 Measuring unit: 1 20 seconds continuous measurement Graphic direction indicator Bidirectional calibration and northerly calibration function Magnetic declination correction Bearing memory Measuring range: -700 to 10,000 m (-2,300 to 32,800 ft.) Measuring unit: 5m (20 ft.) Manual memory measurements (up to 25 records, each including altitude, date, time) High / Low memory Total Ascent / Descent memory Reference altitude setting differential *Changeover between meters (m) and feet (ft.) Barometer Display range: 260 to 1,100 hpa (7.65 to 32.45 inhg) Display unit:1hpa(0.05inhg) differential graphic *Changeover between hpa and inhg Thermometer Display range: -10 to 60 C (14 to 140 F) Display unit: 0.1 C (0.2 F) *Changeover between Celsius ( C) and Fahrenheit ( F) Low-temperature resistant (-10 C/14 F) World time: 31 time zones (48 cities), Daylight Saving on/off Sunrise, sunset time display (PRG-260/240) Moon Data: Moon age of the specific data, Moon phase graph (PRG-250) Tide Graph: Tide level for specific date and time (PRG-250) stopwatch Countdown timer Hourly time signal Battery level indicator Power save function Full auto-calendar (to year 2099) Button operation tone on/off 16 DIGITAL

N [Except PRG-280] Barometer [Except PRG-280] Measuring altitudes based on changes in atmospheric The altimeter determines the altitude at your current location based on accumulated atmospheric changes measured by the sensor. Setting the altimeter at a location where you know the precise altitude before starting your ascent enables it to take even more precise altitude measurements. Sea level measurement Setting the altimeter at a location where you know the precise altitude enables you to determine the elevation of your current position with respect to sea level. If you come across a marker indicating 400 meters above sea level while hiking or climbing, for example, simply set the altimeter at 400 meters. This enables you to obtain more accurate readings with respect to sea level when you take subsequent measurements after moving on. (616 hpa) (701 hpa) (795 hpa) (899 hpa) (1,013 hpa) 4,000 m 3,000 m 2,000 m 1,000 m 0 m Forecasting the weather based on the atmospheric tendency A graphic display of atmospheric readings taken at regular intervals reveals trends at a glance. When the is rising, the weather is likely to improve; when it's falling, there's usually worse weather ahead. This feature can remind you to take your swimming suit along, or alert you to approaching trouble. A downward trending graph threatens worse weather ahead. An upward trending graph indicates the weather is likely to improve. *Example based on PRG-250 / tendency indicator The barometer measures the atmospheric every two hours automatically and displays the recent atmospheric tendency and the current graphically. Atmospheric graph 896 hpa.) tendency display differential graphic 28.1 C.) *Example based on PRG-270 memory The altitude memory stores data on the month, date, time and results of altitude readings taken automatically at regular intervals and displays the highest and lowest altitudes measured as well as the cumulative ascent/descent altitude and relative altitude. This data provides an easily understandable summation of your ascents and descents during a climb. A Start point Lowest altitude F Direction of travel B differential display Checking against contour lines on a map enables you to confirm your cumulative ascents/descents. Determining the height of your hourly ascents by resetting the altitude differential display once an hour can be helpful in establishing a reasonable climbing plan, for example. E C Highest altitude D Stop point Cumulative ascent altitude: total of ascent altitudes (A + C) Cumulative descent altitude: total of descent altitudes (B + D) Highest altitude: altitude measured at the highest point E among all readings during memory measurement memory functions PRG-270 PRG-510/550 PRG-260/250/240 Auto cumulative altitude memory Manual altitude memory Auto altitude memory Highest/lowest altitudes Highest/lowest altitudes to date Cumulative ascent/descent altitudes Sum of cumulative ascent/descent altitudes After 60 minutes *These measurement functions are not intended for use as professional measuring instruments. Please use the measured data for reference purposes only. Lowest altitude: altitude measured at the lowest point F among all readings during memory measurement Highest/lowest previous record altitudes Sum of cumulative ascent/descent altitudes: computed repeatedly at time of memory measurements between 0 and 99,995 meters 1,200 m 200 m 1,000 m tendency display Current time *Example based on Aligning a map with the surrounding terrain If you determine magnetic north with the direction measurement function and place a map beside your watch, you can align the map with the surrounding geography. Magnetic declination correction You can change the direction measurement standard from magnetic north to true north by inputting the magnetic declination data indicated on a topographical map to correct the direction. Thermometer N indicated on map N indicated on watch *Example based on Predicting your destination temperature based on the temperature at your current location The temperature generally decreases by approximately 6.5 C with every increase in altitude of 1,000 meters, or 3.6 F with every increase of 1,000 feet. If the temperature at 1,000 meters is 10 C, therefore, the temperature at 3,000 meters will probably be about -3 C. Bearing Memory [Except /PRG-510/550] The Bearing Memory memorizes directions detected by the direction measurement function and displays them continuously in graphic format. You can travel straight toward your destination by following a course determined with the memorized direction displayed steadily in the 12 o clock position on your watch face. This capability also comes in handy when visibility is low due to such factors as trees or fog. Approx. 10ºC Destination 12 o clock position Current angle *Example based on Approx. -3ºC Graphic indication of the stored bearing Angle of stored bearing 3,000 m 2,000 m 1,000 m 0 m Radio-controlled This radio-controlled timekeeping technology can receive standard time-calibration signals from all 6 transmission stations worldwide and correct the time for the Japanese, American, European and Chinese regions. [/3000] Sunrise, Sunset time display Using Sunset, Sunrise time data to plan climbs Knowing the time remaining before sunset helps you to schedule climbs to assure a safe descent, for example, or to determine the appropriate time to wake up or pitch a tent. Moon Data [PRG-250] [ PRG-270/260/240] Fishing during sunrise and sunset hours when the fish are biting Checking the sunrise and sunset times in advance gives you a good idea of when you can expect the best fishing, so you can make your fishing plans accordingly. Tide Graph Sunset time graphic (24-hour format) Sunrise time [PRG-250] Current time (Flashing) Year, month, date Sunrise time graphic (24-hour format) Sunset time *Example based on PRG-260 PRO TREK 17 Smart Access [] This first Smart Access-equipped combination model offers easy control by quick-lock crown over operations such as altitude measurement correction and alarm setting. Trouble-free time setting can also be conducted simply by pulling out, rotating and pushing in the crown. Electronic Crown Switch * The visual is a graphic image. (Not a PRO TREK model) Solar-powered This proprietary CASIO solar-powered battery-recharging system assures stable operation of various power-hungry functions, including dial lighting, alarms, stopwatches and measurement functions. Solar panel Charging [Except PRG-280] Electric power supply Stable operation of such varied high-load functions as the following: Radio wave reception Time setting Backlight Sensor functions Alarm Stopwatch measurement Determining tidal movements based on the age and phase of the moon Moon Data displays the lunar age and phase of the moon on a day you specify based on year, month and date data. This function is useful for fishing and other marine activities as well as for star watching. New moon First quarter(waxing) Full moon Last quarter(waning) (Lunar age (Lunar age approx. (Lunar age (Lunar age approx. 0) 7 or 8 days) approx. 15 days) approx. 22 or 23 days) Moon phase Moon age *Example based on PRG-250 Auto Light Switch For quick, easy data confirmation, even in the dark or with both hands occupied You need both hands for many outdoor activities, and you don't always have one free to illuminate your watch face in low-light conditions. The Auto Light Switch solves this problem by illuminating the light whenever you turn your wrist to bring the watch into the viewing position. Planning fishing excursions with an eye to tidal changes Anyone who fishes in the sea regularly will agree that the best time to fish is around the change of the tides from flood to ebb. By keeping you posted on the moon age and the ebb and flow of the tides, the Tide Graph helps you to determine the best time and most appropriate method for fishing when planning your next outing. Timeline Tide Graph High tide Low tide *Example based on PRG-250 Month, date 18 PRO TREK