Ref. 16570, Explorer II Rolex, “Oyster Perpetual Date, Explorer II, Superlative Chronometer, Officially Certified”, case No. F108007, Ref. 16570. Made circa 2005. Fine, two-time zone, center-seconds, self-winding, waterresistant, stainless steel wristwatch with date independently adjustable 12-hour hand and a stainless steel Oysterlock bracelet. Accompanied by a Rolex box. Three-body, polished and brushed, screwed-down case back and crown, steel bezel graduated in 24 hours, sapphire crystal with cyclops lens. White with luminous round, baton and triangular indexes, outer minute division, aperture for the date. Luminous steel skeleton hands, second time zone red arrow hand independently adjustable for the second time zone. Cal. 3185, rhodium-plated, oeil-de-perdrix decoration, 31 jewels, straight line lever escapement, monometallic balance adjusted to temperatures and 5 positions, shock absorber, selfcompensating Breguet balance spring, hack mechanism Dial, case and movement signed. Diam. 40 mm. Thickness 12 mm.