MODEL: 126613 LB S/NO: "AN" SERIES BOX & CERT DATED DATED DEC 2020. Chronometer in stainless steel case 41mm fitted with original Rolex stainless steel and 18K yellow gold oyster bracelet. Graduated rotatable 18K yellow gold bezel with ceramic insert for checking decompression time spans. Special oyster case with shoulders protecting the Rolex trip lock winding-crown. Waterproof to 300 m / 1000 feet. Automatic movement 3235, sapphire crystal.