43.00 mm steel case, 14.35 mm thick, transparent sapphire crystal back, non screw-locked crown with two gaskets, convex sapphire crystal with glareproof treatment on both sides, mercury silver dial, Breitling 01 (Manufacture) self-winding movement, approximately 70 hrs of power reserve, gold leather strap, folding buckle. Water resistant to 100 m (330 ft).