At a depth of 10,916 metres, the Challenger Deep is the deepest known spot beneath the oceans. On January 23rd 1960, Swiss explorer Jacques Piccard and US Navy Lieutenant Don Walsh reached it for the very first time aboard the Trieste bathyscaphe. In tribute to this spectacular feat, Emile Chouriet has named its first sports watch “Challenger Deep”. This timepiece combining functionality and aesthetic is capable of plunging to a depth of 300 metres. Its SuperLuminova-enhanced hands and hour-markers emit a green light in a dark environment, while its rotating bezel comes in steel or black or blue ceramic. In keeping with the Emile Chouriet design codes, the Challenger Deep watch features double wing-shaped hands accentuating its noble and virile character designed for daily use.