MOVEMENT Caliber Breitling 13 Movement self-winding mechanical Power reserve approx. 48 hrs Chronograph 1/4th second, 30 minutes, 12 hours Vibration 28,800 v.p.h Jewel 25 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.) 100.0 g. Watch-head Weight (Approx.) 128.8 g. Diameter 46.0 mm Thickness 16.3 mm Height (upper lug tip to lower lug tip) 56.6 mm Lug width (in-between lug) 24.0 mm STRAP Strap material Rubber Strap color Black Strap type Straight Lug 24/20 mm Buckle Material Stainless Steel Buckle type Pushbutton folding clasp Buckle size 20 mm