Detailed PRG-30 technical specs are here →
About PRG-30 in Short. These are three new mid-size additions to the PRO TREK lineup of outdoor gear watches.
Maintaining Triple Sensor and Tough Solar functionality, the size and weight of these models have been reduced for better comfort during long-term wear.
The buttons for direct access to Triple Sensor measurements are located along the right side of the case, and a function name for each button is marked on the bezel for smooth, error-free operation.
The display uses a bolder font for improved legibility of both current time and other display information, even while the display is illuminated.
|Year of First Release||2021|
|Battery Type||Solar (ProTrek Batteries)|
PRG-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 PRG-30 Specs / Features *for base version PRG-30-5
- Case / bezel material: Resin
- Silicon band
- Mineral Glass
- 100-meter water resistance
- Tough Solar (Solar powered)
- LED backlight (Super Illuminator)
Full auto LED light, selectable illumination duration (1.5 seconds or 3 seconds), afterglow
- Low-temperature resistant (–10°C/14°F)
- 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
Magnetic declination correction
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)
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
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
- Approx. battery operating time:
8 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 : 51.6×45.2×12.9mm
- Total weight : 64g
ProTrek PRG-30 on the wrist!
Feedback from Users *accumulated information from our own comments and emails, forum threads, socials, reviews, etc.
+ super light wieght
+ new easy reading BOLD FONT
– no STN LCD
The most distinctive specs of PRG-30 *Editorial
— Cloth Band (for ultimate comfort and a compact design for just the right fit)
— Travel Watch (PRO TREK ruggedness with a gentler touch. Designed for all trekkers, campers and lovers of the great outdoors)
— Smaller Case (51.6×45.2×12.9 mm than in typical ProTrek watches)
— More legible font on the LCD (ensures high visibility and an easy read, whether you’re checking the time, altitude, direction, or temperature)
— 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)
— Digital compass (measures and displays direction as one of 16 points)
— Sunrise, sunset time display (Sunrise time and sunset time for specific date)
— Solar Powered (Tough Solar provides constant behind-the-scenes power)
Other ProTrek PRG Watches *similar by price and functions but different by cases
These are not all ProTrek PRG Series. Here is a list of All ProTrek PRG 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.
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.
PRG-30 Comparison Table with similar PROTREK Watches
Year of first Release
±15 seconds per month
Radio-controlled (via atomic watch signals)
±15 seconds per month
STN LCD (more distinct and bigger digits)
No (Duplex LCD)
No (Duplex LCD)
Cross-Frame Structure (disperses impacts, reinforcing the case’s)
Moon Data (good for fishing and tides)
Sunrise, sunset time display
LED backlight (Super Illuminator)
LED backlight (Super Illuminator)
LED backlight (Super Illuminator)
Case / bezel material
Size (mm) *we consider 48.9×42.8×13.4 to be a traditional watch size (as in DW-5600). So you are to compare how far or close the watch is to this size
54.7 × 51.7 × 15.1mm
54.7 × 51.7 × 14.6mm
51.6 × 45.2 × 12.9mm
Full features (if you want to know more)
Recent News about PRG-30
- [ProTrek Smart] PRG-30 – cloth band, smaller case size and more legible font on the LCD
- [ProTrek Digital] PRG-30 — New Camper Line for trekking and camping
- [ProTrek Review] PRT-B50-4ER – when the watch writes history from a blank slate
- [ProTrek Review] PRW-50Y-1B — Retro Tourist Watch
- [ProTrek Review] PRW-60FC-1A — black beauty with a composite band
You ask, we answer…
CASIO’s original solar-charging system converts not only sunlight but also light from fluorescent lamps and other sources into power.
It’s the electronic mechanism that “estimates” the altitude based on the air pressure.
It measures and displays direction as one of 16 points.
It measures the air pressures and displays tendencies in the weather.
Can’t find a ProTrek of your dream? There are more watches!