Making the most of sixty years of diving knowledge and expertise, this Tudor Black Bay men’s watch is the ultimate tool watch. It’s rugged enough for adventures on the water, but looks great on land too. At A Glance  Aged blue leather strap 41mm stainless steel case with a blue uni-directional rotating bezel and 200m water resistance Domed scratch-resistant sapphire crystal glass Black dial with luminous dot and baton hour markers Snowflake hands Powered by the Manufacture Calibre MT5602 (COSC) Self-winding mechanical movement with bidirectional rotor system Minimum power reserve of 70 hours