TUDOR BLACK BAY 31 S&G M79603-0007

31 mm 316L steel case with polished and satin finish 

Manufacture Calibre  MT5201 (COSC) 

Self-winding mechanical movement with bidirectional rotor system

Integrated construction 

Power reserve of approximately 50 hours

Yellow gold screw-down winding crown with the TUDOR rose in relief

Steel covered by a 0.1mm 18 ct yellow gold cap

Waterproof to 100m (330 ft)

Fixed bezel in steel covered by a 0.3mm 18 ct yellow gold cap

Silver with diamond hour markers

Sapphire crystal

Yellow gold center links at 6 and 12 o’clock

Remaining center links in steel covered by a 0.2mm 18 ct yellow gold cap

"T-fit" folding clasp with safety catch

The logo on the catch is made of yellow gold