At a glance

With Super LED Light, Altimetre and Barometre the GDF-100 is full of handy gadgets. Not only this but it also comes with Stopwatch, World Time, 5 Daily Alarms and 200m Water Resistant.


Shock Resistant

Shock Resistant construction protects against impact and vibration


Altitude Measurement to 10,000m: A built-in pressure sensor measures barometric pressure, which is converted to relative altitude up to a maximum 10,000m.


A built-in temperature sensor measures the ambient temperature around the watch and displays it on the LCD (range, -10°C /+60°C)

Display Illumination

LED backlight for the digital display (Full auto LED light, selectable illumination duration, afterglow)

Alarm Function

Daily Alarm: sounds each day at the time you set

Countdown Timer

A stopwatch that counts backwards: When 0 minutes, 0 seconds is reached, the timer emits a 10-second signal tone.


Accurate measurement of elapsed time with a touch of a button

Water Resistant

200 Metre/20 Bar

World Time

Displays the current time in major cities and specific areas around the world.

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