CASIO PRO TREK

PRO TREK watches are equipped with the latest Triple Sensor technology, Version 3, making them even more accurate than before. Three exceptionally sensitive, ultra-compact sensors measure with absolute precision and instantly display changes in your surroundings. The accuracy of the digital compass, altimeter, barometer, and thermometer is only possible thanks to Triple Sensor technology. At the same time, the triple-layer sensor is 95% smaller and consumes 90% less energy than before.

Triple-layer sensor
The triple-layer sensor is at the heart of the PRO TREK watch and consists of three mini sensors that accurately measure direction, altitude, air pressure, and temperature. The watch uses this technology to measure and display the changing conditions around you. CASIO successfully developed this innovative technology to move from the second to the third generation of sensors in 2013.

Altimeter

The altimeter measures the exact altitude of your current location using data from a highly sensitive air pressure sensor. As soon as atmospheric pressure changes even slightly, the altimeter also registers a change in altitude, so it is best to calibrate your PRO TREK at a location where you know the exact altitude. The watch totals the number of meters climbed — which means you can see at a glance how high you climbed after finishing your hike.

Barometer/Thermometer

In this sensor, a thin layer of silicon is stretched over a hollow vacuum container. This layer reacts to changes in ambient pressure by expanding or contracting. Resistors measure the changes and convert the values into altitude or air pressure readings. The thermal sensor reacts even to the smallest temperature changes. These changes are evaluated by a microprocessor and displayed on the watch as temperature readings.

Digital compass 

A direction sensor determines the direction of magnetic north and the bearing, and displays this information digitally. If you are using a map while hiking, you can place it next to your PRO TREK, align it accordingly, and orient yourself perfectly. Magnetic declination refers to the angle between magnetic north and true north. The declination angle is primarily determined by fluctuations in the Earth's magnetic field, and closer to the poles also by the different positions of geographic and magnetic north. You can switch the watch display between magnetic and true north to correct your orientation.