Invicta Men's 6528 Subaqua Collection Noma IV GMT Automatic Black Ion-Plated Watch Precise 21-jewel Swiss-automatic movement; functions without a battery; powers automatically with the movement of your arm Durable flame-fusion crystal; black ion-plated stainless steel case and bracelet Date function Black sunray double layered cut through pattern dial with dome shaped dot hour markers; unidirectional bezel; sweeping second hand; screw-down crown with protector Water-resistant to 1,640 feet (500 M)