Omega Omega - ST 345.0809 Speedmaster Professional Moonwatch SpeedyMoon

Speedmaster Professional Moonwatch SpeedyMoon

REF. ST

1/10

Widely produced

Case

MaterialStainless Steel

Diameter42 mm

Lug width20 mm

ShapeRound

CrystalPlexi

Case backClosed

Water resistance50 m

Dial

ColourBlack

IndexesStick / Dot Hands: Stick

HandsStick

Movement

Caliber866

Typemanual

Reserve45 h

Explore caliber→

In Context

At 42 mm it is sized to the current mainstream: 40 mm is the median across every watch measured in this catalogue. 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.

The movement is hand-wound, so winding it becomes part of the day rather than something the watch does for you. 45 hours of reserve carries it overnight, but not through a weekend in a drawer. At 21,600 vph the seconds hand advances 6 times a second, the slower and more audible rate of an older design.

ST 345.0809 is one of 16 executions of the ST base reference. Underneath they are the same watch; what separates this one is a black dial and a stainless steel case. Beyond the time it carries a chronograph.

The ST family

ST 345.0809 is one of 16 variants sharing the ST base reference — same watch underneath, different dial, bezel, or bracelet execution. Browse the others: