The Tudor Heritage Black Bay P01 Steel Black Dial 42mm Ref. M70150-0001 is a bold reinterpretation of a 1960s prototype originally developed for the U.S. Navy, combining historical design with modern functionality. The 42mm stainless steel case features a unique hinged end-link locking system for the bidirectional rotating bezel, ensuring secure and precise operation. The black dial is marked by luminescent dot and index hour markers, paired with Tudor’s signature Snowflake hands for optimal legibility in low-light conditions. Powered by the robust Calibre MT5612, this self-winding movement delivers a 70-hour power reserve and is chronometer-certified for exceptional accuracy. Water-resistant to 200 meters and protected by a sapphire crystal, the Black Bay P01 is built for rugged performance. The watch is paired with a brown leather strap featuring a stainless steel pin buckle, adding a vintage-inspired touch to this innovative and functional timepiece.