OMEGA Seamaster Diver 300M

The Omega Seamaster Diver 300M, reference 210.22.44.51.03.001, is a chronograph with a 44 mm case in steel and yellow gold. The case measures 17.2 mm thick with a lug-to-lug span of 52.8 mm, and a unidirectional rotating bezel surrounds the blue dial. A domed sapphire crystal with antireflective treatment covers the dial, which sits over Omega's self-winding calibre 9900. This Master Chronometer movement has a column wheel and a Co-Axial escapement, and it runs for 60 hours on a full wind. Beyond the chronograph function, the watch adds a small seconds display and a date window. It rides on a blue rubber strap with a steel pin buckle, and the screw-in crown backs up a rating of 300 metres.