42mm yellow Rolesor case comprised of a 904L steel monobloc middle case, screw-down back, screw-down crown, 18K yellow gold fluted bezel with bidirectional rotatable Rolex Ring Command, scratch-resistant sapphire crystal with cyclops lens over the date and double anti-reflective coating, black dial, index hour markers, Rolex calibre 9001 automatic movement , second time-zone displayed via off-center rotating disc, Saros annual calendar with date at 3 o'clock and month indicated in discrete apertures at each of the 12 hour marks, stainless steel and 18K yellow gold Oyster bracelet, folding Oysterclasp buckle with Easylink 5mm comfort extension link. Waterproof to 100 meters.