OMEGA Seamaster Diver 300M

Omega's Seamaster Diver 300M, reference 210.30.42.20.10.001, is a dive watch with a 42 mm steel case. It measures 13.56 mm thick with a lug-to-lug span of 49.93 mm, and a unidirectional rotating bezel surrounds the green dial. A screw-down crown and helium valve accompany the sapphire crystal, treated against reflections on both sides. The Omega calibre 8800 drives the watch, a self-winding Master Chronometer movement certified by METAS and resistant to magnetic fields up to 15,000 gauss, with a power reserve of 55 hours. Date and chronometer certification round out the specification. A sapphire display back reveals the movement's Geneva waves finish. Fitted to a steel bracelet with a foldover clasp and diver extension, the case carries a 300 metre water resistance rating.