Breitling Navitimer Montbrillant Datora Watches. 43.00 mm stainless steel case, screwed in back, non screw-locked crown with two gaskets, bidirectional bezel with slide rule, cambered sapphire crystal with glareproof treatment on both sides, black dial with black subdials, selfwinding mechanical Breitling 21 movement with day and month dial aperture and date pointer, chronograph function, approximately 42 hours of power reserve, black croco strap with deployant buckle. Water resistant to 3 bars.