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OMEGA Constellation Observatory

OMEGA Constellation Observatory

AutomaticRose Gold

Ref. 140.53.39.21.99.002

Collection: ConstellationCase size: 39.4mmMovement: 8915

The Omega Constellation Observatory 140.53.39.21.99.002 measures 39.4 mm in rose gold. The case stands 12.23 mm thick with a lug-to-lug of 47.2 mm, and the pink dial sits beneath a domed, bevelled sapphire crystal with anti-reflective treatment on both sides. Inside is the self-winding calibre 8915, a Master Chronometer movement with a Co-Axial escapement and a silicon balance spring, certified to resist magnetic fields up to 15,000 gauss. It also has a time zone function, and the rotor and balance bridge carry a Sedna gold finish with an applied Constellation Observatory medallion. Power reserve runs to 60 hours, and a display back reveals the movement. The watch is fitted on a burgundy alligator leather strap with a rose gold pin buckle. Water resistance is rated to 30 metres.

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Last updated 11 Jul 2026Suggest a correction

TECHNICAL SPECIFICATIONS

GENERAL

Gender

Men

CASE

Diameter

39.4mm

Thickness

12.23mm

Lug to Lug

47.2mm

Lug Width

19mm

Case Material

Rose Gold

Water Resistance

30m

Crystal

Sapphire Crystal

MOVEMENT

Movement Type

Automatic

Caliber

8915

Power Reserve

60h

DIAL

Dial Color

Pink

BRACELET/STRAP

Bracelet/Strap

Alligator Skin

Clasp Type

Buckle

Clasp Material

Rose Gold

FEATURES & COMPLICATIONS

ChronometerDisplay backMaster Chronometer

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