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PRO TREK will blend in the PRW-3500 with the color of the mysterious sky that will appear on the horizon before sunset. The blue sky ring with titanium strap, sapphire glass mirror and other hard equipment, appearance and toughness, the series is equipped with the third generation of three sensors, MULTIBAND 6, TOUGH MOVEMENT and other functions, can adapt to a variety of outdoor environments.


          • Case / Bezel Material: Resin / Stainless Steel 
          • Titanium alloy strap
          • Black ion IP processing
          • Solar power
          • Waterproof 200 meters
          • High brightness LED lighting
          • Low temperature resistant device (-10°C/14°F)
          • Radio wave receiving function: automatic signal receiving (up to 6 times per day, no longer received after receiving successfully;
            receiving signals from China, receiving 5 times a day) / manual signal receiving
            <China> receiving radio wave: BPC, frequency: 68.5kHz
            <Japan >Receiving radio wave: JJY, frequency: 40kHz/60kHz (corresponding models of Fukushima/Kyushu two launchers)
            <North America> Received radio wave: WWVB, frequency: 60kHz
            <European region> Received radio wave: MSF/DCF77, frequency: 60kHz/ 77.5kHz
            * When the local time is set to the city that can receive the signal, receive the radio wave suitable for the launch pad of the city.
            The time difference is automatically set according to the selected city.
          • Digital Compass:
            16 azimuth measurement and display
            Measurement range: 0°~ 359°
            Unit of measurement: 1°
            continuous measurement (60 seconds continuous automatic detection)
            Direction indication
            bidirectional correction and north correction
            geomagnetic declination correction
            memory elimination
          • Height measurement
            range: -700~10,000m (-2,300~32,800ft.)
            Unit: 1m (5 ft.)
            Manual memory measurement (up to 30 strokes, each containing height, date and time)
            Automatic memory measurement (including maximum/minimum Height, cumulative increase / cumulative decline height)
            Road log value (up to 14 strokes, each containing maximum / minimum height, cumulative increase / cumulative decline height, date and time)
            Other: relative height (-3,000 ~ 3,000m)
            selection Measuring pitch: 5 seconds or 2 minutes
            * 1 second only in the first 3 minutes of measurement
            * meter (m) and inch (ft.) switching
          • Air pressure measurement
            range: 260~1,100 hPa (7.65~32.45 inHg)
            Unit: 1 hPa (0.05 inHg) Air 
            pressure trend graph (past 42 hours)
            Air pressure difference map
            Instant climate change warning
            *hPa and inHg switching
          • Temperature measurement
            range: -10~60°C (14~140 °F)
            Unit: 0.1°C (0.2°F)
            *°C and °F switching
          • World Time
            31 Time Zone (48 cities), city code display, daylight saving time (on/off)
          • Sunrise/sunset time indication
          • 1/10 second code meter
            measurement range: 999:59’59.9″
            measurement mode: elapsed time, halfway time, first and second time difference
          • Countdown
            measurement unit: 1 second
            measurement range: 24 hours
            start time setting range: 1 minute ~ 24 hours
          • 5 independent alarms (including a group of snooze alarms)
          • report punctually
          • Power indicator
          • Power saving function (when entering the dark state, the watch will automatically turn off the screen display)
          • Fully automatic calendar (~2099)
          • 12/24 hour switching
          • Operation sound (on/off)
          • Time mode: hour, minute, second, PM, year, month, date, week
          • Accuracy: ±15 seconds per month (normal quartz accuracy when no radio waves are received)
          • Estimated battery life:
            In the case of solar cells not generating electricity, continuous operation after full charge: when
            all functions are normal: about 7 months of
            power saving: about 22 months

Size / total weight

  • Size: 56.9 x 53.4 x 14.5 mm
  • Weight: 130g


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