Stuhrling Original Men's Automatic Gold-Tone-Stainless-Steel and Rubber Dress Watch, Color:Black (Model: 209.333631) Quality automatic movement; functions without a battery; powers automatically with the movement of your arm Hand engraved skeleton movement with blued steel screws and black PVD coated skeleton rotor Reliable automatic-self-wind movement 20 jewels Krysterna scratch resistant crystal Not Water Resistant