Speedmaster Racing Master Co-Axial / Sedna / Blue / Alligator

In Context

At 44.25 mm it is a large watch — well above this catalogue’s 40 mm median, and enough to dominate a narrow wrist. The case back is open, so the movement is visible without taking the watch apart, and the sapphire crystal will resist everything short of deliberate abuse. 100 m is genuine swimming resistance — more than the shape of this watch suggests it would need.

The movement winds itself from the motion of your wrist. 60 hours of reserve is enough to set it down on Friday evening and find it still running on Monday. At 28,800 vph the seconds hand advances 8 times a second.

329.53.44.51.03.001 stands on its own in this catalogue — no other reference here shares its base number. It pairs a blue dial with a sedna gold case. Introduced in 2017. Beyond the time it carries a chronograph.

First of Omega's chronograph movements to receive the new METAS cerfication. Introduced at BaselWorld 2016 in the Omega Seamaster Planet Ocean; replacement for the 9301 movement. Self-winding chronograph movement with column wheel mechanism and Co-Axial escapement. Movement and watch tested according to Master Chronometer certification process approved by METAS. Resistant to magnetic fields reaching 15,000 gauss. Silicon balance-spring on free sprung-balance, 2 barrels mounted in series, automatic winding in both directions, time zone function. Central hour, minute and chronograph seconds hands, small seconds hand and 12-hour and 60-minute recorders. 18K Sedna™ gold rotor and balance bridge with Geneva waves in arabesque.

2 other watches in the library run the Omega 9901.

Omega

Seamaster Diver 300M Master Co-Axial Chronograph 44 Sedna Gold / Black / Rubber

210.62.44.51.01.001 · 44 mm

Omega

Seamaster Planet Ocean 600M Co-Axial 45.5 Master Chronometer Chronograph Sedna Gold / Black / Alligator

215.63.46.51.01.001 · 45.5 mm