Seamaster 120M Automatic 25 Stainless Steel / Blue

In Context

At 25 mm this is jewellery scale — a watch sized to be worn as an ornament rather than read across a room. The case back is closed, so the movement stays out of sight, and the sapphire crystal will resist everything short of deliberate abuse. 120 m is genuine swimming resistance — more than the shape of this watch suggests it would need.

It is quartz, so it will hold time far more closely than any mechanical watch here, and asks for a battery every few years rather than a service.

2581.81.00 stands on its own in this catalogue — no other reference here shares its base number. It pairs a blue dial with a stainless steel case.

The 1424 is Omega's small three-hand quartz movement with date, an ETA 256.461 with Omega's finish and logo. It powers 41 watches in this library, most of them 28 mm Seamasters. It is 18.2 mm across and 2.45 mm high with 9 jewels, rhodium-plated, and carries an end-of-battery indicator: when the cell runs low the seconds hand starts jumping four seconds at a time, so the change can be made before the watch stops. The battery lasts about three years. The 256 family is the ETA quartz base behind a great many Swiss ladies' watches, and Omega's version differs in finish and adjustment rather than mechanism. In the library it sits under 21 [Seamaster Diver 300M](/brands/omega/seamaster-diver-300m) references, the 28 mm quartz model, 13 [Aqua Terras](/brands/omega/aqua-terra), 4 [Constellations](/brands/omega/constellation) and 3 Seamaster 120Ms. The 28 mm case accounts for 19 references and the 30 mm for 8. The [1538](/calibers/omega-1538) is the larger quartz with date in the 36.25 mm and 41 mm Seamaster, and the [1376](/calibers/omega-1376) the two-hand quartz in the Constellation.

40 other watches in the library run the Omega 1424.

Omega

Seamaster Aqua Terra 150M Quartz 29.2 Stainless Steel / Blue / Bracelet

2577.80.00 · 29.2 mm

Omega

Seamaster Aqua Terra 150M Quartz 29.2 Stainless Steel / Black / Bracelet

2577.50.00 · 29.2 mm

Omega

Seamaster Diver 300M Quartz 28 Stainless Steel / Black / Bracelet

22825000 · 28 mm

Omega

Seamaster Aqua Terra 150M Quartz 30 Stainless Steel / Diamond / MOP / Bracelet

231.15.30.61.55.001 · 30 mm