Seamaster Aqua Terra 150M Master Chronometer Small Seconds 38 Stainless Steel / Green / Bracelet

In Context

At 38 mm it sits just under the modern norm — the band that suits the widest spread of wrists. At 12.4 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. 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.

220.10.38.20.10.001 stands on its own in this catalogue — no other reference here shares its base number. It pairs a green dial with a stainless steel case. Introduced in 2021.

The 8802 is the 8800 with a small seconds at 6 o'clock, introduced in 2021 for the Constellation Small Seconds 34 and the De Ville Small Seconds 41. It powers 27 watches in this library. The [8800](/calibers/omega-8800) is Omega's single-barrel Master Chronometer movement, certified by METAS to 15,000 gauss, with a silicon balance spring on a free-sprung balance, bidirectional winding, a 55-hour reserve and a beat of 25,200 vph at 26 mm across with 35 jewels. The 8802 moves the seconds off the centre to a subdial, which gives a dress watch the face of a hand-wound one, and finishes the rotor and balance bridge in rhodium. In the library it powers 14 [De Ville](/brands/omega/de-ville) Small Seconds references at 41 mm, 8 [Constellation](/brands/omega/constellation) Small Seconds at 34 mm and 5 [Aqua Terras](/brands/omega/aqua-terra) at 38 mm. The [8806](/calibers/omega-8806) is the no-date version of the same base, the [8801](/calibers/omega-8801) the gold-rotor version, and the glossary covers the [Master Chronometer](/glossary/master-chronometer) standard.

26 other watches in the library run the Omega 8802.

Omega

De Ville Small Seconds Master Chronometer Stainless Steel / Turquoise / Bracelet

434.10.41.20.10.001 · 41 mm

Omega

De Ville Small Seconds Master Chronometer Stainless Steel - Yellow Gold / Champagne

434.23.41.20.08.001 · 41 mm

Omega

Constellation Master Chronometer Small Seconds 34 Stainless Steel / Silver / Bracelet

131.10.34.20.02.001 · 34 mm

Omega

De Ville Small Seconds Master Chronometer Stainless Steel - Sedna Gold / Silver / Bracelet

434.20.41.20.02.001 · 41 mm