Casio ProTrek PRW-50 — Sapphire Crystal & Solar Power

Rating: 3 out of 5.
Size★★★★
Weight★★
Functions★★★★
Materials★★★
Battery Years★★★★★
Price★★★
How did we compose this rating? Enjoy our calculations →

Detailed PRW-50 technical specs are here →

About PRW-50 in Short. This new model with a lightweight, highly wear resistant Field Composite Band, is the latest addition to the PRW-50 Series from PRO TREK, the outdoor watch for serious outdoor adventurers.
The Field Composite Band combines urethane and fine resin with metal inserts for the ultimate in durability. The buckle uses lightweight titanium alloy, and a slide adjust mechanism with double lock buckle enables fine length adjustment. Durable and lightweight, the band minimizes the load on the wrist during long climbs.
The bezel, back cover, and buckle are all done to an ion plated (IP) finish.
A high-transparency and scratch resistant sapphire crystal provides the readability and toughness demanded for outdoor wear.
The powerful Tough Solar power system of this watch provides a stable supply of power for MULTIBAND 6 that automatically adjusts time settings based on reception of one of six time calibration signals around the globe, and for Triple Sensor Version 3 capabilities for measuring your bearing, barometric pressure, temperature, and altitude. This means you get uninterrupted operation both for daily and outdoor activities.
This new model is designed to deliver a comfortable fit, without sacrificing any PRO TREK function.


General Information

Price350$  *average Amazon Price, we may earn commission from purchases
Year of First Release2019
Model RangeRADIO-CONTROLLED
Battery Type Solar (ProTrek Batteries)
Manual5620 (official)

PRW-50 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-50 Specs / Features *for base version PRW-50FC-1

  • Case / bezel material: Resin / Stainless steel
  • One-touch, slide-adjustable Double-lock three-fold clasp
  • Stainless Steel / Resin Composite Band
  • Sapphire Glass with non-reflective coating
  • Neobrite
  • Screw Lock Crown
  • Gray ion plated bezel
  • 100-meter water resistance
  • Double LED light
    LED light for the face (Full auto LED light, Neon illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
    LED backlight for the digital display (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)
    *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
  • The auto hand home position correction
  • Digital compass
    Measures and displays direction as one of 16 points
    Measuring range: 0 to 359°
    Measuring unit: 1°
    60 seconds continuous measurement
    Hand indication of north
    Bidirectional calibration
    Magnetic declination correction
  • Altimeter
    Measuring range: –700 to 10,000 m (–2,300 to 32,800 ft.)
    Measuring unit: 1 m (5 ft.)
    Hand indication of altitude differential
    Manual memory measurements (up to 30 records, each including altitude, date, time)
    Auto log data (High/low altitudes, cumulative ascent and descent)
    Others: Relative altitude readings (±100 m / ±1000 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)
    Hand indication of pressure differential
    Atmospheric pressure tendency graph
    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
    29 time zones (29 cities + coordinated universal time), One-touch UTC Time Zone Access, daylight saving on/off, Home city/World time city swapping
  • 1/100-second stopwatch
    Measuring capacity: 23:59’59.99”
    Measuring modes: Elapsed time, split time, 1st-2nd place times
  • Countdown timer
    Measuring unit: 1 second
    Countdown range: 60 minutes
    Countdown start time setting range: 1 minute to 60 minutes (1-minute increments)
  • 5 daily alarms
  • Hourly time signal
  • Hand shift feature (manual or auto (during altitude, barometric pressure, and temperature measurement))
  • Battery level indicator
  • Power Saving (display goes blank and hands stop 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:
    Analog: 3 hands (hour, minute (hand moves every 10 seconds), second)
    Digital: Hour, minute, second, am/pm, 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)
    25 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
  • Size of case : 50.5×47.2×13.3mm
  • Total weight : 98g

ProTrek PRW-50 on the wrist!


Feedback from users *accumulated information from our own comments and emails, forum threads, socials, reviews, etc.

PROs
+ very accurate
+ very lightweight on the wrist, and so thin for ccx a protrek watch
+ one of the most comfortable protrek watches
+ indeed look nice on the wrist
+ the Atomic radio update is very nice and works perfect

CONs
– it can be hard to read at a glance due too background color scheme
– so-called Two LEDs are useless in lighting the face or hands at night
– the band is a really cheap rubber


The most distinctive specs of PRW-50 *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)
Smart Access (the system for analogue movements achieves multi-functionality and easy operability simultaneously through a combination of multiple motors and an electronic crown)
Tough Movement (A CASIO-original thin analog movement made possible by hybrid mounting protects against damage and enables auto home position correction that helps keep you on time all the time)
STN LCD for easy reading
Full auto double LED light (Neon Illuminator for the face, LED light for the LCD


Official PRW-50 Video


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 →


PRW-50 Comparison Table with similar ProTrek Watches


PRW-50

Price (Amazon)

Year of first Release

2019

2018

2018

Accuracy

Radio-controlled (via atomic watch signals)

Radio-controlled (via atomic watch signals)

Radio-controlled (via atomic watch signals)

SmartWatch Features

No

No

No

STN LCD (more distinct and bigger digits)

Yes

No

Yes

Cross-Frame Structure (disperses impacts, reinforcing the case’s)

No

No

Yes

Moon Data (good for fishing and tides)

No

No

No

Light

Neobright and Double LED light

Neobright and Full Auto Double LED Light/Backlight with Afterglow

Neobright and Double LED light

Case / bezel material

Resin / Stainless steel

Resin / Stainless steel

Resin / Stainless steel

Glass

Sapphire Glass with non-reflective coating

Mineral glass

Mineral Glass

Battery

Solar powered

Solar powered

Solar powered

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

50.5×47.2×13.3mm

51,6x51,5x13,6mm

50.5×47.2×13.3mm


Full features (if you want to know more)


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.

SMART ACCESS.
Quick Access to Important Functions
With its electronic crown, the innovative Smart Access system provides intuitive access to key functions. By rotating and pressing the crown, the user can switch between individual features such as the altimeter or alarm, and settings can be adjusted quickly and directly. The Smart Access system is protected by a crown switch locking feature, preventing the watch from switching unintentionally to another mode.

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-50 

All Casio PRW-50 News →


You ask, we answer…

What does Tough Solar in PRW-50 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-50?

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

How does Digital compass in PRW-50 work?

It measures and displays direction as one of 16 points.

What does Barometer in PRW-50 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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