Casio ProTrek PRW-3400 — Dual Layer LCD and Biomass Plastic


About PRW-3400 in Short.


General Information

Pricelater *average Amazon Price, we may earn commission from purchases
Year of First Release2022
Model RangeRADIO-CONTROLLED
Battery Type Solar (ProTrek Batteries)
Manuallater (official)

PRW-3400 Model Range *may be updated

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Official Description from Casio.

From PRO TREK, a full-scale outdoor gear for nature lovers, we are introducing the PRW-3400 / 3400Y equipped with radio wave solar, which uses eco-friendly materials. Environmentally friendly biomass plastic is used while maintaining the wearability that is familiar to the arm. It is used for the case, urethane band, and resin back cover. Biomass plastic is a polymer material that contains substances derived from renewable organic resources as a raw material and is obtained by chemically or biologically synthesizing it, and is expected to reduce the environmental load toward the realization of a sound material-cycle society. It is a material that is present. Castor oil is used for the case and back cover, and corn-based biomass plastic is used for the band. A duplex LCD is used for the LCD of the watch. The duplex LCD, which separates the liquid crystal display of the azimuth display and the clock function display, enlarges the compass display, improves readability, and expresses it in a functionally beautiful design that makes it easier to understand the direction. Furthermore, the rotating bezel which is useful for simple azimuth memory is adopted.
In addition, by mounting the pressure sensor inside the case, the unevenness of the case is reduced and the buttons are easy to operate. The functional design creates an expression that is typical of outdoor gear.


Official PRW-3400 Specs / Features *for base version PRW-3400Y-5


ProTrek PRW-3400 Gallery


The most distinctive specs of PRW-3400 *Editorial
— 100-meter water resistance
(good for swimming but not for deep diving)
Biomass plastics in the case, band, and case back (the environmentally friendly biomass plastics are produced using materials derived from castor seeds and corn, as well as other raw materials)
— Tough Solar (CASIO’s original solar-charging system converts not only sunlight but also light from fluorescent lamps and other sources into power)
— Radio-controlled Watch; Multi band 6 (additional way for time sync. This watch receives time calibration radio signals that keep the displayed time accurate)
— Low temperature resistant (stable operation of the watch is guaranteed even at a temperature of -20°C)
— 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)


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!

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.

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.

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.

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.


Recent News about PRW-3400

All Casio PRW-3400 News →


You ask, we answer…

What does Tough Solar in PRW-3400mean?

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-3400?

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

How does Digital compass in PRW-3400 work?

It measures and displays direction as one of 16 points.

What does Barometer in PRW-3400 do?

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


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