MOVEMENT Caliber Breitling 17 Movement self-winding mechanical Power reserve approx. 38 hrs Vibration 28,800 v.p.h Jewel 25 jewels Calendar Dial aperture CASE Case material Stainless Steel Caseback Screwed in Water resistance 1,000 m (3,300 ft) Crown Screw-locked, two gaskets Crystal Convex sapphire crystal, glareproofed both sides DIMENSIONS Product Weight (Approx.) 220.0 g. Watch-head Weight (Approx.) 118.1 g. Diameter 44.0 mm Thickness 14.2 mm Height (upper lug tip to lower lug tip) 53.0 mm Lug width (in-between lug) 22.0 mm STRAP Strap material Stainless Steel Strap color Metal Bracelet Strap type Straight Lug 22/20 mm