Case material: Steel; Charge: Automatic; Conditions: New Presentation condition : With dealer guarantee ; Model: Constellation Price on request Gmtbroker Reference: 123.20.27.20.55.005 Omega 123.20.27.20.55.005 Complete Details: Brushed stainless steel case and bracelet. Brushed steel bezel with engraved Roman numeral hour markers. Polished yellow gold claws. White mother of Pearl dial with luminescent hands. 11 diamond hour markers. Date window displayed at the 3 o'clock position. Omega Co-Axial Escapement movement  - Caliber  8520 with a rhodium-plated finish. This ultra-precise movement features automatic winding in both directions and has a power reserve of 50 hours. This watch is also known as 12320272055005