Tudor Black Bay Fifty-Eight Navy Blue, 316L steel watch case. The case has been processed to show two visual effects: polished and frosted. The diameter of the watch is 39 mm. The screw-in winding crown on the watch side is made of stainless steel. The top of the crown is decorated with embossed Tudor Rose logo. The design of this large crown is a typical feature of the first-generation Tudor diving watch with a water resistance of 200 meters. It is equipped with a pit pattern anti-slip design to facilitate the wearer’s daily adjustment of time.
Matte blue anodized aluminum is made into a unidirectional rotating outer ring with 60-minute scale numerals. The numerals and hour markers on the outer ring are silver-plated. The hour markers and hands on the navy blue dial are coated with Grade A Swiss Super-LumiNova® The luminous material coating allows the watch to be read clearly even in a dimly lit environment. There is also a non-slip pit pattern design on the side of the dive timer’s outer ring to facilitate the operation of the diver in the underwater environment.
The Tudor Black Bay Fifty-Eight Navy Blue watch uses Tudor’s iconic hands, called snowflake angular hands. Tudor designed this distinctive hand in 1969. The watch adopts a dense bottom design. The watch is equipped with a TUDOR original MT5402 two-way oscillating system automatic winding mechanical movement. The MT5402 movement has the display function of hours, minutes and seconds. It has a diameter of 26 mm and is designed for The design of a medium-sized TUDOR watch. The movement structure is ingeniously designed to ensure reliability and durability. The two sides of the inertia fine-tuning balance wheel are fixed by solid cross clamps. The original Tudor movement MT5402 has a power reserve of up to 70 hours and is water-resistant to 200 meters. The movement has also been certified by the Swiss Chronometer Testing Center (COSC). Tudor watches purchased after January 1, 2020 are provided with a five-year warranty without registration.
In 1969, Tudor introduced a diving watch with a blue dial and outer ring. Since then, other sports watches in the series have successively introduced blue models, and the blue models have quickly become a very iconic color of Tudor watches, and they are called Tudor Blue. In the 1970s, with the large-scale assembly of Tudor diving watches by the French Navy, this made Tudor Blue more popular. Tudor took this as a design inspiration, making the Biwan 1958 navy blue style continue the long tradition of Tudor blue and incorporate modern styles, designing the navy blue dial and outer ring for the watch.