Nepal-born British mountaineer Nimsdai Purja set two new mountaineering world records at Mount Everest, he reached the summit without supplemental oxygen and while doing so wore this Montblanc limited-edition '1858 Geosphere 0 Oxygen' timepiece. Powered by a Swiss-made calibre MB 29.27 automatic movement, it's comprised of a polished titanium case and black ceramic bezel housing a signature blue glacier dial detailed with Geosphere Northern and Southern hemispheres. One of only 290 pieces, it's uniquely devoid of oxygen to ensure its precision over time, irrespective of how harsh the mountain environment may be. We offer a two-year warranty for all working parts and manufacturing faults for luxury watches. For more information, contact one of our experts by emailing watches@mrporter.com
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