Rolex GMT Master II 126710BLNR-O Mens Watch. 40mm stainless steel case with Oystersteel monobloc middle case, screw-down crown, bidirectional rotatable 24-hour graduated bezel with black and blue Cerachrom insert and engraved numerals, scratch-resistant sapphire crystal with cyclops lens over the date, black dial, hour markers set with Chromalight, Rolex calibre 3285 self-winding movement with second time-zone hour hand and instantaneous date, approximately 70 hours of power reserve, stainless steel Oyster bracelet with rounded five-piece links, folding Oysterlock buckle with Easylink 5mm comfort extension link. Waterproof to 100 meters.