Omega · Speedmaster
Speedmaster Professional Moonwatch
Ref. 310.30.42.50.01.001
currentCaliber 3861 (sapphire)DocumentedLast reviewed Not yet reviewed
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Authentication Notes
Movement
HighHigh confidence
Caliber 3861 Master Chronometer
The current Moonwatch uses the co-axial, anti-magnetic (15,000 gauss) 3861. A 1861 belongs to the prior generation (311.x / 3570.50).
Inspection points
No inspection checklist has been published for this reference.