Case material: Steel; Charge: Automatic; Conditions: New Presentation condition : With dealer guarantee ; Model: Constellation Price on request Gmtbroker Reference: 123.15.27.20.55.001 Omega 123.15.27.20.55.001 Complete Details: Brushed stainless steel case and bracelet. Polished bezel set with 32 round diamonds. Mother of pearl dial with with a supernova pattern. 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 12315272055001