Breitling Premier B01 Chronograph 42 Bentley Centenary Limited Edition Watch - Stainless Steel - Brown Dial - Brown Calfskin Leather Strap - Tang Buckle Limited Edition - AB01181A1Q1X242. 00 mm stainless steel case, 13. 65 mm thick, transparent sapphire crystal back, non screw locked crown with two gaskets, cambered sapphire crystal with glareproof treatment on both sides, brown dial, Breitling 01 (Manufacture) self winding movement, approximately approx. 70 hrs of power reserve, brown calfskin leather strap, tang buckle. Water resistant to 100 m (330 ft).