Baume & Mercier Clifton Automatic Watch - Perpetual Calendar - 42 mm 18K Pink Gold Case - Silver Dial - Black Alligator Strap42 mm polished and satin finished 18k pink gold case, 11. 2 mm thick, sapphire crystal back, non rotating bezel, opaline silver colored dial, In House Manufacture self winding automatic movement with month, small seconds, date, week day, moon phase, approximately 48 hours of power reserve, black alligator strap, pin buckle. Water resistant to 5 ATM (approx. 50 m).