Casio Pro Trek Watch PRW3000-4B

The new PRW-3000 watch features an upgraded system for measuring compass bearing, altitude/atmospheric pressure, and temperature, significantly improved since the last advance of the system in 2002. Equipped with "the Triple Sensor Ver. 3" featuring revised sensors, algorithms, and LSIs, the PRW-3000 attains new heights for data measuring performance in the PRO TREK series.

The direction sensor in the PRW-3000 consumes only 10% of the energy and takes up only 5% of the space of the previous sensor. Continuous measurement of compass bearing has increased from 20 seconds to a series-leading 60 seconds, greatly enhancing the utility demanded by professionals for map reading and route finding. LSI calculation power has increased to significantly reduce altitude measurement times from five seconds to one second, with accuracy also improving from five-meter to one-meter increments. These enhancements ensure fine precision for altitude data readings.

New features include an atmospheric pressure trend alarm that gives notification in response to sudden swings in atmospheric pressures, to keep users constantly informed of pressure swings that might otherwise be overlooked.

• Mineral Glass
• 100-meter Water Resistance
• Resin And Aluminum Case / Bezel Material
• Resin Band
• LED backlight (Super Illuminator), Full auto LED light, selectable illumination duration, afterglow
• LED: White
• Solar powered
• Low-temperature resistant (–10°C/14°F)
• Time calibration signal reception, Auto receive up to six* times a day (remaining auto receives canceled as soon as one is successful),
• Manual receive, The latest signal reception results, *5 times a day for the Chinese calibration signal
• 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
• Digital compass, Measures and displays direction as one of 16 points, Measuring range: 0 to 359°, Measuring unit: 1°
• 60 seconds continuous measurement, Graphic direction pointer,
• Bidirectional calibration and northerly calibration function,
• Magnetic declination correction, Bearing memory
• 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 seconds, *Changeover between meters (m) and feet (ft)
• Barometer, Display range: 260 to 1,100 hPa (7.65 to 32.45 inHg),
• Display unit: 1 hPa (0.05 inHg), Atmospheric pressure tendency graph,
• Atmospheric pressure differential graphic,
• Barometric pressure tendency information alarm (beep and arrow indicates significant changes in pressure), *Changeover between hPa and inHg
• Thermometer, Display range: –10 to 60°C (14 to 140°F), Display unit:  0.1°C (0.2°F), Changeover between Celsius (°C) and Fahrenheit (°F)
• World time, 31 time zones (48 cities + coordinated universal time), city name display, daylight saving on/off
• Sunrise, sunset time display, Sunrise time and sunset time for specific date, daylight pointers
• 1/10-second stopwatch, Measuring capacity: 999:59'59.9'',
• Measuring modes: Elapsed time, split time, 1st-2nd place times
• 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)
• 5 daily alarms (with 1 snooze alarm)
• Hourly time signal
• Battery level indicator
• Power Saving (display goes blank to save power when the watch is left in the dark)
• Full auto-calendar (to year 2099)
• 12/24-hour format
• Button operation tone on/off
• Regular timekeeping: Hour, minute, second, pm, year, month, date, day
• Accuracy: ±15 seconds per month (with no signal calibration)
• Approx battery operating time: 7 months on rechargeable battery (operation period with normal use without exposure to light after charge), 23 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
• Size of case: 56.0 x 47.0 x 12.3 mm
• Total weight: 62 g