Tudor Black Bay One M79660-0001 39 mm Grey Dial

The Tudor Black Bay One M79660-0001 moves to a 39 mm stainless steel case, giving the collection a broader presence without changing its round form. A grey satin dial sits beneath a fixed stainless steel bezel and flat sapphire crystal, with a silver stainless steel bracelet and screw-down crown completing the configuration. The case is 12 mm thick and rated to 100 metres, while Super-LumiNova keeps the dial tied to the practical Black Bay One character.

Power comes from the automatic MT5602, based on a Tudor/Kenissi manufacture platform. Its 25 jewels sit within a 31.8 mm movement measuring 6.5 mm high, with a full openworked tungsten monobloc rotor, free-sprung variable-inertia balance and flat silicon hairspring. The balance beats at 28,800 vibrations per hour, and the calibre provides 70 hours of power reserve with COSC Chronometer certification. This is the 39 mm grey-dial steel configuration.