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. black dial. Breitling 01 (Manufacture) self-winding movement. approximately 70 hrs of power reserve. black rubber aero classic strap. pushbutton folding buckle. Water resistant to 100 m (330 ft).