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Omega Constellation Co-Axial Master Chronometer 131.13.39.20.01.001 | Black Dial, Leather Strap, 39 mm

• 39 mm Stainless Steel Case: A silhouette with classic proportions and a commanding presence (12.43 mm thick and 41.00 mm lug-to-lug), framed by a brushed bezel with engraved Roman numerals and the iconic side lugs.
• Co-Axial Master Chronometer Caliber 8800: METAS-certified in-house automatic movement with magnetic resistance exceeding 15,000 gauss, a date window at 6 o’clock, and a 55-hour power reserve.
• Brushed Black Sunburst Dial: A understated black dial with a light-reflecting brushed finish, accented by hands, applied hour markers, and the Constellation star in 18-karat white gold.
• Integrated Premium Leather Strap: High-quality black leather strap with a rubber lining for maximum durability and comfort (total weight: 90 g).
• Transparent Sapphire Crystal Case Back: A case back that allows you to admire the operation of the Co-Axial escapement with a Si14 silicon balance spring and the arabesque Côtes de Genève finishes.

The Omega Constellation Co-Axial Master Chronometer (Ref. 131.13.39.20.01.001) reinterprets the Swiss brand’s iconic design in a versatile stainless steel case measuring 39 mm in diameter. Its balanced dimensions (41.00 mm lug-to-lug and 12.43 mm thick) preserve the collection’s historic aesthetic elements, such as the recognizable claws at 3 and 9 o’clock and the bezel engraved with Roman numerals.

Its black dial with a sunburst brushed finish offers impeccable legibility, enhanced by the applied hands and hour markers crafted in 18-karat white gold. At the 6 o’clock position, the date window is harmoniously integrated alongside the Constellation star. The dial is protected by a scratch-resistant convex sapphire crystal with an anti-reflective coating on both sides, paired with a sophisticated black leather strap for a lightweight total of 90 grams.

Inside, the OMEGA Caliber 8800 self-winding movement beats, visible through the transparent sapphire crystal case back. Certified as a METAS Master Chronometer, this movement guarantees superior chronometric precision, a 55-hour power reserve, absolute immunity to magnetic fields of up to 15,000 gauss, and water resistance of 5 bar (50 meters).

Detailed Specifications

Brand / Collection OMEGA / Constellation

Reference 131.13.39.20.01.001

Movement Co-Axial Master Chronometer Automatic (OMEGA Caliber 8800 with date)

Certification / Power Reserve Master Chronometer by METAS / 55 hours

Case Stainless steel (39 mm diameter / 12.43 mm thick / 41.00 mm lug-to-lug)

Lug Width Integrated (Constellation design)

Dial Black with sunburst brushed finish, date at 6 o’clock, and 18-karat white gold hour markers

Crystal: Convex, scratch-resistant sapphire crystal with anti-reflective coating on both sides

Case Back: Transparent sapphire crystal

Strap: Black fine leather strap with stainless steel folding clasp

Water Resistance: 5 bar (50 meters / 165 feet)

Total Weight: Approx. 90 g