Three-body, polished and brushed, signature reflector, screwed- down winding crown and case back engraved: "Rolex Oyster - Milgauss," special anti-magnetic shield, sapphire crystal. Black with applied luminous white gold baton indexes, outer minute/seconds track with orange 5-minute markers. Luminous white gold baton hands, orange lightning seconds hand. Cal. 3131, rhodium-plated, fausses cotes and oeil-de-perdrix decoration, 31 jewels, straight-line lever escapement, monometallic balance adjusted to temperature and 5 positions, shock absorber, self-compensating free-sprung Breguet balance spring, Microstella regulating screws, hack mechanism.

Ref Variations: 116400GV,116400V,116400Vbko,116400GV-72400