MOVEMENT Caliber Breitling B09 (Manufacture) Movement Mechanical hand-wound Power reserve Approx. 70 hrs Chronograph 1/4th second, 15 minutes, 12 hours Vibration 28,800 v.p.h Jewel 34 jewels CASE Case material Platinum Caseback Screwed in Water resistance 3 bars i Bezel Bidirectional Crown Non screw-locked, one gasket Crystal Plexiglas DIMENSIONS Product Weight (Approx.) 75.0 g. Watch-head Weight (Approx.) 122.0 g. Diameter 41.0 mm Thickness 14.0 mm Height (upper lug tip to lower lug tip) 48.7 mm Lug width (in-between lug) 22.0 mm STRAP Strap material Calfskin leather Strap color Gold brown Strap type Straight Lug 22/18 mm Buckle Material 18k white gold Buckle type Tang-type Buckle size 18 mm