The new generation of Chronofighter Oversize have been developed for explorers and modern conquerors: they resist to extreme conditions and feature many characteristics useful to explorers.
The start and stop lever on the left of the case, renowned Graham signature, is made of plain carbon material and results from a very specific machining process. The lever is a unique piece of carbon which provides the watch with more stiffness and enhanced usability. The bezel is made of black ceramic.
Each watch is also endowed with a calculated telemeter scale. It enables to measure distances thanks to speed of sound by starting the chronograph when a visible event occurs (e.g. lightning) and stop it when the sound reaches the observer (e.g. thunder). As the temperature influences the speed of sound, Graham engineers have based their calculations on 25°C, the average temperature on Earth. The distance in kilometres can be measured on the dial thanks to the scale rim (346 m/s).
