This Breitlinf is 44.00 mm steel case, 15.50 mm thick, sapphire crystal back, screw-locked crown with two gaskets, unidirectional ratcheted bezel, cambered sapphire crystal with glareproof treatment on both sides, black dial, Breitling 01 self-winding movement with calendar via dial aperture and chronograph function, approximately 70 hours of power reserve, black rubber aero classic strap, pushbutton folding buckle. Water resistant to 200 m (660 ft).