Seamaster Master Co-Axial 39.5 Olympic Games Gold Sedna Gold / Enamel / Alligator

In Context

At 39.5 mm it sits just under the modern norm — the band that suits the widest spread of wrists. At 11.98 mm thick it is about average for a modern wristwatch. 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. 60 m covers rain and hand-washing comfortably; it is not a watch to swim in.

The movement winds itself from the motion of your wrist. 55 hours of reserve is enough to set it down on Friday evening and find it still running on Monday. At 25,200 vph the seconds hand advances 7 times a second.

522.53.40.20.04.003 stands on its own in this catalogue — no other reference here shares its base number. It pairs a white dial with a sedna gold case. Introduced in 2018.

The 8807 is the 8800 with an 18-carat Sedna gold rotor and balance bridge, fitted to Omega's gold-cased mid-size watches. It powers 35 watches in this library. The [8800](/calibers/omega-8800) is a single-barrel co-axial caliber certified by METAS to resist 15,000 gauss, with a silicon balance spring, a free-sprung balance, 35 jewels, a 55-hour reserve and a beat of 25,200 vph. The 8807 is mechanically the same movement; the rotor and balance bridge are made in Sedna gold, Omega's red gold alloy, so that the movement seen through the display back matches the case. The same convention gives the [8501](/calibers/omega-8501), [8521](/calibers/omega-8521) and [8701](/calibers/omega-8701) their numbers. In the library it sits under 25 [Aqua Terra](/brands/omega/aqua-terra) references, the 34 mm and 38 mm models in Sedna gold and two-tone, 4 Seamaster 1948s, 4 [Seamaster Diver 300Ms](/brands/omega/seamaster-diver-300m) in gold and 2 Museum Collection pieces. The 34 mm case accounts for 19 references and the 38 mm for 7.

34 other watches in the library run the Omega 8807.

Omega

Seamaster Aqua Terra 150M Master Chronometer 34 Sedna Gold / Diamond / Wave Diamond / Bracelet

220.55.34.20.99.006 · 34 mm

Omega

Seamaster Aqua Terra 150M Master Chronometer 34 Canopus Gold - Diamond / Champagne / Bracelet

220.55.34.20.60.002 · 34 mm

Omega

Seamaster Aqua Terra 150M Master Chronometer 34 Moonshine Gold - Diamond / Champagne

220.58.34.20.99.008 · 34 mm

Omega

Seamaster Diver 300M Master Co-Axial 42 Canopus Gold / James Bond 60th Anniversary

210.55.42.20.99.001 · 42 mm