CO-1 Chronograph

The CO-1 Chronograph, reference 10242-TINM-BUIDN, is a quartz diver's chronograph from Edox's CO-1 collection, 45 mm across and 15.5 mm thick in titanium, water resistant to 1,000 metres. It has a blue dial and comes on a titanium bracelet. It runs on a quartz movement Edox calls the Caliber 102, and names the Ronda 5030 D alongside it. The helium valve matters to saturation divers: helium that seeps into the case during long stays at depth can escape through it on the way up, instead of pushing the crystal out. The chronograph is a stopwatch built into the movement: the pushers start, stop and reset it, and the subdials count the elapsed minutes. Edox gives its weight as 163 g.