MODEL: 126600 S/NO: "AN" SERIES ROLEX BOX & CERT DATED APRIL 2019. Chronometer in a stainless steel case 43 mm fitted with a graduated rotatable stainless steel bezel with ceramic insert. Original Rolex stainless steel oyster bracelet with quick sliding adjustment feature for resizing of wrist length. The special oyster case with gas escape valve for saturation diving and with shoulders to protect the Rolex trip lock winding-crown. Waterproof to 4000 feet.