Alaska Speedmaster Professional Moonwatch Alaska Project IV

In Context

At 38 mm it sits just under the modern norm — the band that suits the widest spread of wrists. At 11 mm thick it is about average for a modern wristwatch. The case back is closed, so the movement stays out of sight, and the plexiglass crystal scratches easily but polishes back out at home, which sapphire does not. 50 m covers rain and hand-washing comfortably; it is not a watch to swim in.

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.

ST 186.004 is one of 16 executions of the ST base reference. Underneath they are the same watch; what separates this one is a white dial and a stainless steel case. It was a limited edition. Beyond the time it carries a chronograph.

Omega

Black · Stainless Steel

ST 145.0022 · 42 mm

Omega

White · Stainless Steel

ST 145.0022 Alaska II · 42 mm

Omega

Grey · Stainless Steel

ST 145.014 · 41.75 mm

Omega

Brown · Stainless Steel

ST 146.011 · 41.5 mm

Omega

Silver · Stainless Steel

ST 168.0018 · 35 mm

Omega

Black · Stainless Steel

ST 176.0002 · 41 mm

Omega

Blue · Stainless Steel

ST 176.0002 B · 41 mm

Omega

Black · Stainless Steel

ST 176.0012 · 41 mm

+ 7 more variants in this family.

Omega caliber 1620 is quartz movement used in the Speedmaster Quartz. Advanced for its day, it featured a full calendar, and a split seconds chronograph. It is powered by two batteries (SSIH 9909 / Vartachron 547). A special version with a screen backlit by tritium strips was used in the Speedmaster Alaska IV prototype watches.