Casio ProTrek PRW-30 — Mid-size & Bolder Font for Improved Legibility

*PRW-30ECA-1 – Updated June 2021 color!

Rating: 5 out of 5.
Size★★★★
Weight★★★★★
Functions★★★★
Materials★★★★★
Battery Years★★★★★
Price★★★
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Detailed PRW-30 technical specs are here →


About PRW-30 in Short. An array of large metal buttons on the right provide one-touch access to compass, barometric pressure/altitude, and temperature readings that appear on the LCD. Icons on the face glass next to each of the buttons contribute to easy-to-understand, intuitive access to the information you need even when facing a severe outdoor environment. The digital LCD uses a high-contrast bold font, which, in combination with an STN LCD, ensures improved visibility even under harsh sunlight.


General Information

Pricemay be available *average Amazon Price, we may earn commission from purchases
Year of First Release2020
Model RangeRADIO-CONTROLLED
Battery Type Solar (ProTrek Batteries)
Manual3490 (official)

PRW-30 Model Range *may be updated

*Want to be the first to know about new ProTrek Updates? Here we store all recent Monthly ProTrek Updates →


Official PRW-30 Specs / Features *for base version PRW-30-1A

  • Case / bezel material: Resin / Stainless steel
  • Silicon band
  • Mineral Glass
  • 100-meter water resistance
  • LED backlight (Super Illuminator)
    Full auto LED light, selectable illumination duration (1.5 seconds or 3 seconds), afterglow
  • Tough Solar (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
    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, Home city/World time city swapping
  • 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 he 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:
    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)
  • Size of case : 51.6×45.2×12.3mm
  • Total weight : 66g

ProTrek PRW-30 on the wrist!


The most distinctive specs of PRW-30 *Editorial
— 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 ProTrek PRW Watches *similar by price and functions but different by cases

These are not all ProTrek PRW Series. Here is a list of All ProTrek PRW Watches →


Enjoy Japanese approaches to Travel and Functional ProTrek Watches!

ProTrek Philosophy. Every adventure needs a reliable partner. PRO TREK is exactly the kind of watch that you need to meet the demands of your interests. PRO TREK is equipped with functions such as solar power operation, a digital compass, an altimeter, a barometer and a thermometer. The combination of innovative technology, a robust precision movement and state-of-the-art design makes the PRO TREK the perfect companion for all adventures under the open sky. Mountain or valley? Forest or meadow? River or lake? No matter what awaits you, you will be well-prepared to make any rough terrain your own thanks to the PRO TREK.
Experience for yourself how PRO TREK opens up new horizons while always pointing you in the right direction!

Triple Sensor. PRO TREK watches are equipped with the latest Triple Sensor, version 3 technology, making them even more accurate than before. Three highly sensitive, extremely small sensors measure with absolute precision and instantly display changes in your environment. The precision of the digital compass, altimeter, barometer and thermometer is only possible with the Triple Sensor technology. At the same time, the three layer sensor is 95% smaller and consumes 90% less energy than before.

Tough Solar. The CASIO Tough Solar System is now so advanced that even the weakest light sources are sufficient to operate the watches. The solar cells are so small and inconspicuous that they can be integrated easily into every watch face design.
An accumulator in solar watches saves “superfluous” energy and releases it when the watch is in darkness. The accumulator is charged automatically and does not require manual activation.

Altimeter. For all those who set their sights high
The built-in altimeter uses a pressure sensor to measure the current air pressure.
The measured air pressure is then used to provide an “estimate” of the current altitude.
The electronic mechanism in the watch is pre-programmed with “ISA values” (“International Standard Atmosphere”) used to convert pressure values into altitude values.
The air pressure and temperature generally become lower as the altitude increases.
These values define the connection between altitude, air pressure and temperature.


Barometer. The barometer measures the air pressures and displays tendencies in the weather.
The higher a person goes (ascent/terrain), the lower the barometric pressure will be.
An increase in air pressure usually signifies an improvement in the weather.
A decrease in air pressure usually means that bad weather is on its way.
The air pressure is displayed with an accuracy of 1 hPa (hectopascals).
The barometer can measure and display a range from 260 hPa to 1100 hPa.

Digital Compass.
The PRO TREK digital compass shows 16 compass points. The direction of magnetic north and the bearing are calculated by the compass’s directional sensor The directional sensor consists of two rectangular coils that detect slight tensions created by the earth’s magnetic field. Depending on the position and direction, these tensions vary in intensity. There is a non-magnetic resistance between the two coils, which absorbs the subtle changes in tension. With each new position, the values that are measured by the resistance change. A microprocessor converts the measurements so that they can be displayed clearly on your watch.

Thermometer. The thermometer is used to measure the outside temperature.
The temperature is displayed with an accuracy of 0.1 °C.
The thermometer can measure and display a range from -10.0°C to 60.0°C.

RADIO WATCH TECHNOLOGY.
The advantages of radio-controlled watches are obvious: Once they have been set to the relevant time zone, they always display the exact local time. All CASIO radio watches receive signals almost anywhere in Europe. Some models even receive signals in North America, parts of Canada and Mexico (the radio tower in Fort Collins sends signals for a radius of up to 3200 km) and even in Japan or China. In Europe, the change from summer to winter time is also completely automatic.

WATERTIGHTNESS.
The watertightness of the CASIO watches complies with DIN 8310 and ISO 22810. These standards describe the various classes of watertightness and the test procedure used to determine watertightness.
These standards apply to the general wristwatch usage. Watches with metre indications for watertightness cannot be used immediately in this water depth, however, as water resistance metre indications are merely a pictorial representation of the test pressure. A wristwatch withstands the impact of water at the static pressure specified on the watch (e.g. 10 bar) and the theoretical immersion in water to the specified depth.


Recent News about PRW-30 

All Casio PRW-30 News →


You ask, we answer…

What does Tough Solar in PRW-30 mean?

CASIO’s original solar-charging system converts not only sunlight but also light from fluorescent lamps and other sources into power.

What is Altimeter in PRW-30?

It’s the electronic mechanism that “estimates” the altitude based on the air pressure.

How does Digital compass in PRW-30 work?

It measures and displays direction as one of 16 points.

What does Barometer in PRW-30 do?

It measures the air pressures and displays tendencies in the weather.


Can’t find a ProTrek of your dream? There are more watches!

Back to all ProTrek Models

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