Montblanc 1858 Automatic Chronograph 0 Oxygen The 8000 pays tribute to the world’s highest peaks and the alpinists who dare to climb them. The timepiece is housed in a 42mm stainless steel case totally devoid of oxygen and is powered by the MB 25.13 automatic chronograph movement. It features a fluted bi-directional black ceramic bezel with the cardinal points; a dark grey Sfumato glacier patterned dial with orange accents; and blue luminescence. The caseback is engraved with the “Spirit of Exploration” pattern and the watch is fitted with an interchangeable tapered stainless steel bracelet with a fine adjustment system.