From the manufacturer

Casio Pro Trek PRW-2500 Key Features
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Atomic TimekeepingMulti-Band Atomic Timekeeping (US, UK, Germany, Japan, China) Receives time calibration radio signals which keep the displayed time accurate Auto receive function (up to 6 times per day/up to 5 times per day for China) |
Pro Trek Version 3 Triple SensorVersion 3 triple sensor altimeter, barometer, thermometer and compass |
Pro Trek Tough Solar PowerIntegrated Solar Panel That Uses Sunlight and UV Light to Recharge the Watch’s Battery |
Casio Pro Trek PRW-2500 Additional Key Features
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Water ResistantWater Resistant to 200 Meters |
Multi Alarm5 Independent Daily alarms |
Stopwatch1/100 second stopwatch Measuring capacity: 23:59’59.99″ Measuring modes: Elapsed time, split time, 1st-2nd place times |
World Time31 times zones (48 cities + UTC), city code display, daylight saving on/off |

Casio Pro Trek PRW-2500 Series
From Pro Trek, authentic gear for the outdoor adventurer comes a new addition to the 200M water resistant PRW2500 Series. The bezel is also imprinted with directional markings to help when taking bearing measurements. For easy viewing of Triple Sensor data such as direction, atmospheric pressure, temperature, altitude and even tide & moon data, a duplex LCD display and full auto EL backlight are employed. Topping off a host of additional features is Self-Adjusting, Multi-Band 6 Atomic Timekeeping and Self-Charging Solar Power.
Model in the images may not be the actual watch for sale
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PRG-300CM-4 | PRG-600-1 | PRT-B50-1 | PRG-270D-7 | |
Solar Powered | ✓ | ✓ | ✓ | |
Atomic Timekeeping | ||||
Triple Sensor | ✓ | ✓ | ✓ | |
Metal Band | ✓ | |||
Stopwatch | ✓ | ✓ | ✓ | ✓ |
Countdown Timer | ✓ | ✓ | ✓ | ✓ |
Sunset/Sunrise Data | ✓ | ✓ | ✓ | |
Tide/Moon Data | ||||
Bluetooth Connected | ✓ | |||
Quad Sensor | ✓ |