This is an authentic ROLEX Stainless Steel 40mm Sea-Dweller Oyster Perpetual Watch Black 16600. This stylish timepiece is crafted of stainless steel and features a 40mm case with a black dial, a uni-directional rotating bezel, luminescent hour markers and hands, a date window, and automatic movement. Follow this item for alerts. Rolex is a registered trademark of Rolex. FASHIONPHILE is not affiliated with Rolex.