Available at Discount Watch Store, Invicta 4837 Swiss Automatic Men's Reserve Chronograph features black ion plated and stainless steel two tone case and bracelet, Swiss made Valjoux 7750 automatic movement, skeleton case back and sapphire crystal, screw-down crown, deployment clasp with safety. This modern luxury chronograph is water resistant to 500 meters. Case measures 54 mm in diameter, 21 mm thickness.