MODEL: 116613 LB S/NO: "AN" New Rolex Box & Cert Dated MAY 2015, Local AD. NEW DIAL. Chronometer in stainless steel case 40mm fitted original Rolex stainless steel and yellow gold oyster bracelet. Graduated rotatable 18K gold ceramic bezel for checking decompression time spans. Special oyster case with shoulders protects the trip lock winding-crown. Waterproof to 300 m / 1000 feet. Automatic movement 3135, sapphire crystal model.