MOVEMENT Caliber Breitling B09 (Manufacture) Movement Mechanical hand-wound Power reserve approx. 70 hrs Chronograph 1/4th second, 30 minutes Vibration 28,800 v.p.h Jewel 28 jewels CASE Case material Stainless Steel Caseback Screwed in (sapphire crystal) Water resistance 100 m (330 ft) Bezel Fixed Crown Non screw-locked, two gaskets Crystal Cambered sapphire, glareproofed both sides DIMENSIONS Product Weight (Approx.) 94.0 g. Watch-head Weight (Approx.) 72.6 g. Diameter 40.0 mm Thickness 13.0 mm Height (upper lug tip to lower lug tip) 47.6 mm Lug width (in-between lug) 20.0 mm STRAP Strap material Alligator Leather Strap color Brown Strap type Curved Lug 20/18 mm Buckle Material Stainless Steel Buckle type Folding clasp Buckle size 18 mm