Baume & Mercier Riviera Automatic Watch - Chronograph - 43 mm Black ADLC Case - Black Dial - Black Rubber Strap43 mm sand and blasted black ADLC steel case, 14. 14 mm thick, non rotating bezel, sun satin finished black dial, Valjoux 7750 self winding automatic movement with day date, chronograph, approximately 48 hours of power reserve, black rubber strap, adjustable triple folding buckle with security push pieces. Water resistant to 10 ATM (approx. 100 m).