caliber CH 28-520 HU self-winding movement
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Rolex Yellow Gold Datejust 31 Watch - Domed Bezel - Champagne Index Dial - Oyster Bracelet - 278248 chio Grey caliber CH 28-520 HU self-winding31mm 18K yellow gold case, screw down crown with twinlock double waterproofness system, domed bezel, scratch resistant sapphire crystal with cyclops lens over the date, champagne dial, index hour markers, Rolex calibre 2236 automatic movement with center hour, minute and seconds hands, instantaneous date with rapid setting, and stop seconds for precise time setting, approximately 55 hours of power reserve, 18K yellow gold Oyster bracelet with flat