42.00 mm steel and red gold case, 14.35 mm thick, screw-locked crown with two gaskets, unidirectional ratcheted bezel, cambered sapphire crystal with glareproof treatment on both sides, black dial, Breitling 20 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).
42.00 mm stainless steel and 18K red gold case, 14.35 mm thick, screw-locked crown with two gaskets, unidirectional ratcheted bezel, cambered sapphire crystal with glareproof treatment on both sides, blue dial, Breitling B20 (Manufacture) selfwinding movement, approximately approx. 70 hrs of power reserve, blue rubber strap, pushbutton folding buckle. Water resistant to 200 m (660 ft).