Seiko Prospex Sea Green SPB381J1 Steel Automatic Men's Watch. Watch with steel case with a diameter of 42 mm and a thickness of 13 mm. Unidirectional rotating green bezel, made of steel. Green dial with sapphire crystal and anti-reflective coating on the inner surface. Screw-down caseback and crown. Automatic movement with manual winding and approximately 72-hour power reserve. Cal. 6R54. 24 hour hand with stop second hand capability. Silver colored steel bracelet, with triple folding clasp with push button release. Water resistance of 200 meters. Delivered with original box and official guarantee.