
Keeps yourself in time

10 bar water resistant

Lets you know your direction

Lets you know the barometric pressure and altitude

Lets you know the temperature

PRO TREK
This timepiece really delivers the whole package — convenient, one-push outdoor functionality in a watch that incorporates materials expected to help reduce environmental impact.
Satisfy your passion for the great outdoors and love of the environment with the digital PRW-35. The soft urethane band, designed with slits, delivers breathability and comfortable wear.
Bio-based resins used in the band and key components in the case and case back keep the weight of the watch down and the comfort to your wrist up on those epic days you spend outdoors.
Simply push the large dedicated buttons along the right side of the case to check compass bearing, barometric pressure/altitude, and temperature. The mode name is shown near each button so you know at a glance which digital reading is displayed.
The super-twisted nematic (STN) LCD and large, bold digital readout deliver excellent readability wherever you find yourself, even in the harshest terrains.
To this array of functions, add CASIO performance with Tough Solar charging, Multiband 6 radio control, and water resistance up to 100 meters, and you are ready for action wherever you go.
51.2 × 44.6 × 13 mm
Low-temperature resistant (-10℃/14℉)
Altimeter
Measuring range: -700 to 10,000 m (-2,300 to 32,800 ft.)
Measuring 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)
Trek log data (up to 14 records of high/low altitudes, auto cumulative ascent and descent of particular treks)
Others: Relative altitude readings (-3,000 to 3,000 m)
Selectable measurement interval: 5 seconds or 2 minutes
*1 second for first 3 minutes only
*Changeover between meters (m) and feet (ft)
45 g
145 to 215 mm
5 daily alarms (with 1 snooze alarm)
Hourly time signal
LED backlight (Super Illuminator)
Full auto LED light, selectable illumination duration (1.5 seconds or 3 seconds), afterglow
12/24-hour format
Regular timekeeping:
Hour, minute, second, pm, year, month, date, day
Approx. battery operating time:
6 months on rechargeable battery (operation period with normal use without exposure to light after charge)
22 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
1/10-second stopwatch
Measuring capacity: 999:59'59.9''
Measuring modes: Elapsed time, split time, 1st-2nd place times
Sunrise, sunset time display
Sunrise time and sunset time for specific date, daylight pointers
Time Calibration Signals
Station name: DCF77 (Mainflingen, Germany)
Frequency: 77.5 kHz
Station name: MSF (Anthorn, England)
Frequency: 60.0 kHz
Station name: WWVB (Fort Collins, United States)
Frequency: 60.0 kHz
Station name: JJY (Fukushima, Fukuoka/Saga, Japan)
Frequency: 40.0 kHz (Fukushima) / 60.0 kHz (Fukuoka/Saga)
Station name: BPC (Shangqiu City, Henan Province, China)
Frequency: 68.5 kHz
Countdown timer
Measuring unit: 1 second
Countdown range: 24 hours
Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)
Home Time/World Time swapping
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