MOVEMENT Caliber Breitling B20 (Manufacture) Movement Selfwinding, high frequency Power reserve approx. 70 hrs Vibration 28,800 v.p.h Jewel 26 jewels Calendar Dial aperture CASE Case material Stainless Steel Caseback Screwed in Water resistance 200 m (660 ft) Bezel Unidirectional ratcheted rotating bezel Crown Screw-locked, two gaskets Crystal Cambered sapphire, glareproofed both sides DIMENSIONS Product Weight (Approx.) 145.0 g. Watch-head Weight (Approx.) 86.6 g. Diameter 42.0 mm Thickness 14.3 mm Height (upper lug tip to lower lug tip) 51.5 mm Lug width (in-between lug) 22.0 mm STRAP Strap material Rubber Strap color Blue Strap type Straight Lug 22/20 mm Buckle Material Stainless Steel Buckle type Pushbutton folding clasp Buckle size 20 mm