Authentic Tudor Black Bay Bronze Automatic Grey Dial Leather Strap Men's Watch. 43mm round bronze case with grey dial, featuring automatic movement (Tudor Calibre MT5601 engine), 70 hours power reserve, and a screw-down crown. Equipped with uni-directional rotating bezel, scratch-resistant sapphire crystal, and a black leather strap with tang clasp for comfort fit. Rated at 200 meters / 660 feet water resistance and comes with a 5 year WatchMaxx warranty.