Seamaster Aqua Terra 150M Master Chronometer Small Seconds 41 Sedna Gold / Silver / Bracelet

In Context

At 41 mm it is sized to the current mainstream: 40 mm is the median across every watch measured in this catalogue. At 13.2 mm it is a tall case, and it will catch on a cuff. 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. 150 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 25,200 vph the seconds hand advances 7 times a second.

220.50.41.21.02.002 stands on its own in this catalogue — no other reference here shares its base number. It pairs a silver dial with a sedna gold case. Introduced in 2021.

Self-winding movement with Co-Axial escapement and Small Seconds and Date displays at 6H. Certified Master Chronometer, approved by METAS, resistant to magnetic fields reaching 15,000 gauss. Free sprung-balance with silicon balance spring, automatic winding in both directions. Rhodium plated finish with Geneva waves in arabesque.

4 other watches in the library run the Omega 8917.

Omega

Seamaster Aqua Terra 150M Master Chronometer Small Seconds 41 Stainless Steel / Sedna Gold / Blue / Rubber

220.22.41.21.03.001 · 41 mm

Omega

Seamaster Aqua Terra 150M Master Chronometer Small Seconds 41 Stainless Steel / Blue / Rubber

220.12.41.21.03.005 · 41 mm

Omega

Seamaster Aqua Terra 150M Master Chronometer Small Seconds 41 Stainless Steel / Silver / Bracelet

220.10.41.21.02.002 · 41 mm

Omega

Seamaster Aqua Terra 150M Master Chronometer Small Seconds 41 Sedna Gold / Blue / Bracelet

220.50.41.21.03.001 · 41 mm