The Ultimate Guide to All PROTREKs — composed by Experts
Here are some new color variations for the PRO TREK PRW-3100 Series of Triple Sensor models that pick up information about the ever changing environment around you.
The cases and faces of these models are basic black or khaki, for designs that are easy to coordinate with a wide variety of outdoor fashions. The digital displays of the PRW-3100Y use STN liquid crystals for the best in readability.
These new models add a variety of new design enhancements, without sacrificing any PRO TREK function.
•Sunrise/sunset time display
•Black ion plated bezel (PRW-3100Y-1B / 2B)
•Grey ion plated bezel (PRW-3100Y-3)
PRW-3100Y-1B
Specifications of PRW-3100Y-1B
- Case / bezel material: Resin / Stainless steel
- Resin Band
- Mineral Glass
- 100-meter water resistance
[learn_more]
- LED backlight (Super Illuminator)
Full auto LED light, selectable illumination duration,afterglow - 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)
*5 times a day for the Chinese calibration signal
Manual receive
The latest signal reception results - 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
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 minutes
*1 second for first 3 minutes only
*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 (past 42 hours of readings)
Atmospheric pressure differential graphic
Barometric pressure tendency information alarm (beep and arrow indicate 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), 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)
22 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge) - Size of case : 56×47.1×12mm
- Total weight : 68g
PRW-3100Y-3
Specifications of PRW-3100Y-3
- Case / bezel material: Resin / Stainless steel
- Resin Band
- Mineral Glass
- 100-meter water resistance
[learn_more]
- LED backlight (Super Illuminator)
Full auto LED light, selectable illumination duration,afterglow - 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)
*5 times a day for the Chinese calibration signal
Manual receive
The latest signal reception results - 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
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 minutes
*1 second for first 3 minutes only
*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 (past 42 hours of readings)
Atmospheric pressure differential graphic
Barometric pressure tendency information alarm (beep and arrow indicate 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), 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)
22 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge) - Size of case : 56×47.1×12mm
- Total weight : 68g
Official source: http://www.casio-intl.com
PRW-3100 Profile / Casio ProTrek
Average Amazon Price: $230 (yes, we may earn a commission on qualifying purchases from our links to Amazon). Check the Price on Amazon →
Year of first release: 2015
The most distinctive specs:
– 100-meter water resistance (good for swimming but not for deep diving)
– Low temperature resistant (stable operation of the watch is guaranteed even at a temperature of -20°C)
– Radio-controlled Watch; Multi band 6 (additional way for time sync. This watch receives time calibration radio signals that keep the displayed time accurate)
– Tough Solar (CASIO’s original solar-charging system converts not only sunlight but also light from fluorescent lamps and other sources into power)
– Digital compass (measures and displays direction as one of 16 points)
– Thermometer (can measure and display the outside temperature in a range from -10 C to 60 C)
– Barometer (measures the air pressures and displays tendencies in the weather)
– Altimeter (The electronic mechanism “estimates” the altitude based on the air pressure)
– Sunrise/sunset display (After entering the geographical location, sunrise and sunset times can be displayed for any given date)
Other colors and full specs: PRW-3100 Wiki Page
ProTrek PRW-3100 Rating System
| Size | ★★★ |
| Weight | ★★★★ |
| Functions | ★★★★ |
| Materials | ★★★ |
| Battery Years | ★★★★★ |
| Price | ★★★★ |