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 DLC-Coated Stainless Steel Caseback Screwed in Water resistance 2,000 m (6,600 ft) Bezel Unidirectional, ratcheted Crown Screw-locked, two gaskets Crystal Convex sapphire crystal, glareproofed both sides DIMENSIONS Product Weight (Approx.) 160.0 g. Watch-head Weight (Approx.) 135.4 g. Diameter 46.0 mm Thickness 16.8 mm Height (upper lug tip to lower lug tip) 57.6 mm Lug width (in-between lug) 24.0 mm STRAP Strap material Rubber Strap color Blue Strap type Straight Lug 24/20 mm Buckle Material DLC-Coated Stainless Steel Buckle type Tang-type Buckle size 20 mm