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Omega Speedmaster Professional Moonwatch 321 Platinum / Black / Bracelet 311.90.42.30.99.002
Reference

Omega Speedmaster Professional Moonwatch 321 Platinum / Black / Bracelet 311.90.42.30.99.002

The OMEGA Speedmaster Calibre 321 311.90.42.30.99.002, introduced in 2025 as a platinum interpretation of the historically significant Moonwatch lineage, brings together the architecture of the fourth-generation Speedmaster with the modern revival of one of OMEGA’s most important chronograph movements. While the…

Reference311.90.42.30.99.002
CollectionSpeedmaster Moonwatch
Case diameter42 mm
Case materialCeramic, Platinum
BezelTachymeter
Case shapeRound
Case backOpen
Lug width20.00 mm mm
MovementOmega caliber 321
Water resistance50 m
Dial colourBlack
Dial finishGloss
IndexesStick / Dot
HandsStick
CrystalSapphire
Year introduced2025
Limited editionYes

This is a reference-catalog entry for the Omega Speedmaster Professional Moonwatch 321 Platinum / Black / Bracelet 311.90.42.30.99.002. WatchFlow's Watch Library lets a dealer attach a reference like this to a piece of stock in one click, so the brand, reference and specs are filled in automatically instead of retyped — then that record drives listings, invoices and reports. See how it fits the wider watch inventory management workflow.

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