Baume & Mercier Clifton Automatic Watch - COSC Certified - Date - 40 mm Steel Case - Gray Dial - Blue Alligator Strap40 mm polished and satin finished steel case, 11. 3 mm thick, sapphire crystal back, non rotating bezel, shading lacquered gray dial, Baumatic BM13 1975A COSC self winding automatic movement with date, approximately 120 hours of power reserve, blue alligator strap, adjustable triple folding buckle with security push pieces. Water resistant to 5 ATM (approx. 50 m).