Weight (gr) 138 Resistance to water pressure Up to 10 bar water pressure (100 m / 330 ft) Case thickness 10.9 Case options see-through caseback Case length 39.50 Case width 40.00 Case Material 316L stainless steel case | horn width 12.00 Case shape Rectangular (barrel-shaped) Crystal Anti-reflective scratch resistant sapphire crystal glass Energy Automatic jewels 23 Model POWERMATIC 80.111 clock mechanism Swiss automatic Caliber 11 1/2''' | Dial SDSLG (Hour Minute Seconds Date) Caliber Diameter (mm) 25.6 power reserve Up to 80 hours of power reserve Functions Patented Nivachron balance spring Strap details 316L stainless steel Clasp interchangeable quick release bracelet, Butterfly clasp with button |