Case material: Yellow gold; Charge: Automatic; Conditions: Excellent Presentation condition : With dealer guarantee ; Price on request Gmtbroker Reference: 116518LN - Solid, polished finished, 18kt yellow gold case with brushed & polished finished center lugs. - Polished 18kt yellow gold screw-down crown with Rolex's patented "Triplock" triple waterproofness system, ensuring that the crown screws down against the Oyster case as securely as a submarine hatch. - Screw-down chrono buttons in polished 18kt yellow gold. - Continuous running small seconds hand sub-dial located at the 6 o'clock position. - Rolex in-house calibre 4130, beats at 28,800 vph, composed out of 290 parts, contains 44 Jewels & has an approximate power reserve of 72 running the time only or 66 hours with the chronograph function running. Bezel: - Fixed bezel. - Black "Cerachrom" bezel, made of highly durable ceramic that is extremely hard, highly scratch-resistant, has excellent corrosion resistant properties & is unaffected by ultraviolet rays so the color will not fade. - Yellow gold filled engraved tachymeter scale on the bezel. Dial: - Champagne/gold colored dial with black sub-dials. - Applied black rimmed index hour markers with luminous fill. - Fine printed minute/seconds & fractions of a second track. - Polished yellow gold hands, hour & minute hands with luminous fill. Chronograph/Stop watch function: - Large central seconds counter hand, able to measure time up to 1/8th of a second. - 30 minute counter sub-dial located at the 3 o'clock position. - 12 h