Tudor Black Bay One 39

The Tudor Black Bay One 39, reference M79660-0002, has a 39mm steel case with polished and satin finish. Case thickness measures 12mm. The flat sapphire crystal sits over a blue dial with luminous hands and indices, and a central seconds hand runs from a screw-down crown bearing the Tudor rose. Inside is the manufacture calibre MT5602, a self-winding chronometer movement with roughly 70 hours of power reserve. The steel bracelet closes with a Tudor "T-fit" folding clasp and safety catch. That same screw-down crown keeps the case sealed to a depth of 100 metres.