OMEGA REF. Si14 SEAMASTER 300 MASTER CO-AXIAL STEEL Omega, "Seamaster 300, Master Co-Axial Chronometer, >15'000 Gauss, Liquid Metal Technologies," Automatic, No. 87344712, Ref. Si14. Made circa 2010. Fine, center-seconds, self-winding, water resistant to 300 m, anti-magnetic to 15'000 gauss, diver's wristwatch. Accompanied by the original fitted box and a stainless steel Omega deployant clasp. Three-body, polished and brushed, transparent screweddown case back and crown, unidirectional revolving graduated bezel for decompression times, faceted lugs, sapphire crystal. Black with luminous baton indexes and painted white Arabic numerals. Luminous steel arrow hands. Cal. 8400, rhodium-plated, 38 jewels, straight-line lever escapement, monometallic balance adjusted to 5 positions, shock absorber, self-compensating flat balance spring.