Paying tribute to the worlds highest peaks and the alpinists who dare to climb them enduring extreme conditions, the Montblanc 1858 Automatic Chronograph 0 Oxygen The 8000 is housed in a 42mm stainless steel case totally devoid of oxygen. This has several advantages for explorers by eliminating fogging and preventing oxidization, thus allowing the movement to last far longer with greater precision. The timepiece is powered by the MB 25. 13 automatic chronograph and features a fluted bi-directional black ceramic bezel with luminescent cardinal points; a dark grey Sfumato glacier patterned dial with orange accents and blue luminescence. The case back is engraved with theSpirit of Explorationpattern and the watch is fitted with an interchangeable tapered stainless steel bracelet with a fine adjustment system.