Baume & Mercier Classima Automatic Watch - Date - Diamond-Set - 31 mm Steel Case - White Mother-Of-Pearl Dial - Shiny Red Alligator Strap31 mm polished steel case, 8. 25 mm thick, sapphire crystal back, white mother of pearl dial, ETA 2892 A2 self winding automatic movement with date, approximately 42 hours of power reserve, shiny red alligator strap, pin buckle. Water resistant to 5 ATM (approx. 50 m).