Black Bay One 36 S&G M79643-0002 36-39mm 30-minute recorder and 12-hour recorder

30-minute recorder and 12-hour recorder

The serial number is 598460

*rings are handmade in the US and they ship 6-8 Weeks after orders are placed

sapphire crystal with an anti-reflective coating

Black Bay One 36 S&G M79643-0002 36-39mm 30-minute recorder and 12-hour recorderManufacture Calibre MT5400 (COSC) Self winding mechanical movement with bidirectional rotor system 36 mm steel case with polished and satin finish Steel and yellow gold bracelet, polished and satin finish, with steel T fit folding clasp and safety catch Waterproof to 100m (330 ft) Fixed bezel in yellow gold Silver dial Flat sapphire crystal Power reserve of approximately 70 hours Yellow gold screw down winding crown with the TUDOR rose in relief