TUDOR Black Bay One 36 S&G

36mm steel and yellow gold case, Steel and yellow gold bracelet CASE: 36mm steel case with polished and satin finish BEZEL: Fixed bezel in steel covered by a 0.3mm yellow gold cap MOVEMENT: Manufacture Caliber MT5400 (COSC) Self-winding mechanical movement with bidirectional rotor system DIAL: Black WINDING CROWN: Screw-down winding crown with the TUDOR rose in relief. Steel covered by a 0.1mm yellow gold cap CRYSTAL: Flat sapphire crystal WATERPROOFNESS: Waterproof to 100m (330 ft) BRACELET: First center links in steel or solid yellow gold. Remaining center links are made of a steel core capped with 0.2mm of yellow gold. TUDOR "T-fit" folding clasp with safety catch. The logo on the catch is made of solid yellow gold