Edox CO-1 Chronograph Titanium

Edox bills itself as the water champion and says it invented the double crown seal, and the CO-1 Chronograph puts that history into a 45 mm titanium case rated to 1,000 m. The crown and pushers screw down and carry double O-rings, a helium escape valve is there for saturation work in pressure chambers, and the rotating bezel is ceramic, which Edox uses because it resists scratches and keeps its colour. The sapphire crystal is 3 mm thick, and the hands and indices carry Super-LumiNova X1. The movement is quartz, Edox's Caliber 102, which is Ronda's 5030.D, running a chronograph and a date. It stands 15.5 mm tall, weighs 130 g on its rubber strap and takes a 25 mm strap between the lugs. Edox lists it at $1,355 before tax.

Written 10 October 2026 from Edox's product page.