MODEL: 116718 LN S/NO: "M817xxx" SERIES BOX & CERT DATED NOV 2009. Chronometer in 18K yellow gold case 40mm, Rolex 18K solid yellow gold oyster bracelet, total 11 links. Graduated rotatable 18K yellow gold bezel, 24-hour hand, and independently adjustable 12-hour hand allow simultaneous use of any two time zones. Case with shoulders protects the winding crown. Waterproof to 100 m / 330 feet. Automatic movement, sapphire crystal. Watch hardly been polished.