Will be allowed to go when mechanical watch ， winding need more if time buyers with high accuracy requirements ， please be careful to buy This section of the manual mechanical watch table ， you need clockwork manually . 1 transparent skeleton dial design make you the most fashionable point of view. 2 stainless steel case， the watch more durable. 3 high quality leather to bring you a new classic definition. Waterproof 4.3ATM fit your everyday needs. Size ( about ) : Diameter: 41 mm Thickness : 15mm Band length: 185 mm Movement: Mechanical Strap: high-grade leather Case: Stainless Steel Waterproof: not suitable for swimming ， shower.