Ball Engineer Hydrocarbon AeroGMT Sled Driver - DG2018C-S17C-BK Military which is the same material

which is the same material used for the hands

known for its distinctive aesthetics and historical significance

40 mm yellow gold case with anti-magnetic protection

18 sapphires

silver dial with 1 Roman numeral and blued steel hands

Ball Engineer Hydrocarbon AeroGMT Sled Driver - DG2018C-S17C-BK Military which is the same materialFEATURES Movement _ Automatic caliber BALL RR1201 C _ Chronometer certified COSC Functions _ 44 micro gas tubes on hour, minute, second, second time zone hands, dial and bezel for night reading capability _ Luminous three time zone indication _ Hours, minutes, sweep seconds and date Shock resistance _ 7,500Gs Water resistance _ 100m 330ft Antimagnetic _ 4,800A m Case _ Stainless steel _ 42mm, height 13. 85mm _ Bidirectional rotating curved sapphire