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Casio Introduces New PROTREK Watch with Water Resistance
to 200 Meters for Outdoor Activities in the Mountains or Ocean

Dual-layer LCD Display Makes it Easy to Get Data on the Natural Environment
Featuring an Atmospheric Pressure Trend Information Function

  • July 26, 2011


TOKYO, July 26, 2011 — Casio Computer Co., Ltd., announced today the release of a new PROTREK outdoor watch. The new PRG-250 and 250T watches offer the functions needed for not only mountain sports, but also ocean and water sports activities, including 200-meter water-resistance and a tide graph function.

Casio continues to improve its PROTREK series of outdoor watches featuring sensor technology by incorporating advice from expert mountain climbers and trail runners. The PRG-130 released in 2008 gained popularity as the first triple-sensor watch with 200-meter water-resistance. The three sensors enable display of compass bearings, atmospheric pressure/altitude and temperature.

Along with the popular tide graph and 200-meter water resistance, the new triple-sensor PRG-250 and 250T boast a dual-layer LCD that can display different types of data simultaneously.

Atmospheric pressure is not only shown numerically and in a trend graph, but also via a new barometric trend information function. When there is a characteristic change in atmospheric pressure data when altitude has not changed, a corresponding arrow icon appears to indicate the change: sudden rise / fall in atmospheric pressure, or high / low pressure passing. These icons make it easier to forecast weather changes.

The new watches offer a rotating bezel for recording of basic compass bearings, and a large measurement button that can be easily operated even when wearing gloves. They deliver a high level of operability and practicality, including a special texture near the light button to make it easy to find in the dark. These outdoor watches can be used in a wide range of activities from mountain climbing, stream climbing, and rafting, to sea kayaking and fishing, where tide information is useful.

Equipped with Tough Solar technology, the new watches operate on solar power. The PRG-250 features a softer resin watchband for comfort, while the PRG-250T boasts a lightweight titanium watchband for a high-quality look.



Reading the Barometric Pressure Change Indicator
Sudden rise in pressure.
Sudden fall in pressure.
Sustained fall In pressure,
changing to a rise.
Sustained rise in pressure,
changing to a fall.



200-meter water resistance; low-temperature resistant (-10°C / 14°F)
Digital Compass
Measures and displays direction as one of 16 points; measuring range: 0° to 359°; measuring unit: 1°; 20-second continuous measurement; graphic direction pointer; bearing memory; magnetic declination correction; bidirectional calibration and northerly calibration function
Measuring range: -700 to 10,000 m (-2,300 to 32,800 ft.) without reference altitude; measuring unit: 5 m (20 ft.); reference altitude setting; altitude differential; manual memory measurements (up to 14 records, each including altitude, date, time); high altitude/low altitude memory; total ascent/descent memory
Measuring range: 260 to 1,100 hPa (7.65 to 32.45 inHg); measuring unit: 1 hPa (0.05 inHg); atmospheric pressure graph; barometric pressure differential pointer; barometric pressure change indicator
Measuring range: -10 to 60°C (14 to 140°F); measuring unit: 0.1°C (0.2°F)
Tide Graph
Tide level for specific date and time
Moon Data
Moon age of the specific data; moon phase graph
World Time
48 cities (31 time zones; daylight saving on/off) and Coordinated Universal Time
1/100-second stopwatch; measuring capacity: 23:59’59.99”; elapsed time; split time; 1st - 2nd place times
Countdown Timer
Measuring unit: 1 second; input range: 1 to 60 minutes (1-minute increments); reset time: 1 to 5 minutes (1-minute increments)
5 independent daily alarms; hourly time signal
Other Functions
Full auto-calendar; 12/24-hour format; button operation tone on/off; electro-luminescent backlight (full auto EL light with afterglow); selectable illumination duration: 1.5 / 3.0 second
Power Source
Tough Solar power system (solar-charging system)
Continuous Operation
About 23 months with the power-saving function* ON after full charge
* Display shuts off after a certain period in a dark location
Accuracy at Normal Temperature
±15 seconds per month
Size of Case
56.3 × 50.6 × 15.0 mm
Total Weight
PRG-250: 80.2g
PRG-250T: 112.0g

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