Tudor Black Bay 58 M79030B-0001 39 mm Blue Dial

The Black Bay 58 M79030B-0001 sets a blue satin dial inside a 39 mm stainless-steel case, framed by a matching unidirectional steel bezel. A steel bracelet and sapphire crystal keep the presentation crisp, while the screw-down crown and 200-metre water resistance preserve the watch's serious diving brief. Its no-date layout gives the blue surface an especially uncluttered character.

Tudor calibre MT5402 is an automatic, bidirectionally wound and hand-windable movement developed around this compact Black Bay 58 format. It measures 26 mm across and 4.99 mm high, contains 27 jewels and uses a silicon hairspring with a free-sprung variable-inertia balance. The COSC Chronometer runs at 28,800 vph, is regulated by Tudor to -2/+4 sec/day, and stores 70 hours of reserve.