Winner Classic Skeleton Dial Hand Winding Mechanical Sport Army Watch for Men Hollow Transparent Dial with Leather Band Strap White & Blue Scratch resistant mineral glass. High quality leather band gives you a new classic definition. Hollow transparent dial design reveals your fashionable point of view. Transparent case back that the movement of the watch can been seen Power by winding spring manually at least 20 times a day . 3ATM water resistance suits your daily need.