Seamaster Aqua Terra 150M Quartz 30 Stainless Steel / Grey / Bracelet

In Context

At 30 mm it is small by current standards, in the range most wristwatches occupied before cases began growing through the 1990s. The case back is closed, so the movement stays out of sight, 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.

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.

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

The quartz movement of the 30 mm Aqua Terra, with a date and an end-of-life indicator that steps the seconds hand in jumps to warn that the battery is nearly out. Rhodium-plated. Omega uses quartz here for the reason most makers do at this size: a mechanical calibre small enough would end up thicker and less accurate.

1 other watch in the library runs the Omega 4561.

Omega

Seamaster Aqua Terra 150M Quartz 30 Stainless Steel / Grey / Bracelet

231.10.30.60.06.001 · 30 mm