Casio PRW3500 Series | Pro Trek | Black/Black | 100M WR | Compass | Alt/Baro-Thermo | Tough Solar Power | Atomic Timekeeping | 1-100 SEC Stopwatch | Countdown Timer | World Time

Designed for outdoor enthusiasts, the Casio Pro Trek PRW3510Y Digital Sports Men's Watch boasts CASIO'S Triple Sensor technology, rechargeable solar battery and precise time calibration among other awesome features. This rugged and versatile timepiece is sure to enhance your outdoor experience.

Triple Sensor Engine

The new triple sensor offers Improved accuracy, is 95% slimmer, and uses 90% less power. Three high-sensitivity miniaturized sensors take accurate measurements of constantly changing natural phenomena, and display directions, differences in altitude, and atmospheric pressure tendencies in both digital and analog formats as well as temperatures in digital format.

Tough Solar

You don't have to worry about changing your battery again with Pro Trek's solar technology. The battery is automatically charged by light, either direct from the sun or from light sources inside. Watches with this feature have a solar cell and a special rechargeable battery (secondary battery) that is charged by the electrical power produced by the solar cell.

Auto Light

You'll always be able to read your Pro Trek display... even in total darkness. An EL Backlight or LED light makes the face of the Pro Trek exceptionally bright. The watch also includes an auto light. So when you tilt the watch toward your face, the LEDs automatically light up for night time viewing.

Atomic Timekeeping

This radio-controlled timekeeping technology can receive standard time-calibration signals from all 6 transmission stations worldwide and correct the time for the Japanese, North American, European and Chinese regions.