Hamilton Khaki Field King Auto Reference H64455133 Caliber H-40 Collection Khaki Field Movement: Automatic Watch Function: Date, Day Case size: 40mm Thickness (mm): 11.15 Dial color: Black Case material: Stainless steel Crystal: Sapphire Lug width: 20mm Power reserve: 80 hour Status: Current collection Water Resistance: 5 bar (50m) Open Case Back: Yes