Reference : H64615735 Caliber : H-40 Collection : Khaki Aviation Movement : Automatic Case size : 42mm Dial color : Black Case material : Stainless steel Crystal : Sapphire Lug width : 20mm lug width Lining Tanning : Mineral Power reserve : 80-hour power reserve Water Resistance : 10 bar (100m) Anti Reflection : Yes Open Case Back : Yes