The Montblanc Geosphere is a world time watch with a mountaineering theme. More specifically, the watch was conceived around the idea of highlighting the highest summits on each continent. These summits and the challenging routes to reach them are collectively known as the "Messner List" to mountain climbers, named after legendary mountaineer Reinhold Messner — who Montblanc partnered with to create its latest limited-edition Geosphere model.
The Montblanc 1858 Geopshere has an interesting take on the world time complication: the prominent, map-motif subdials at 6 and 12 o'clock depict the northern and southern hemispheres, making for handy references as they rotate to display world time along with day/night indications. At 9 o'clock on the main dial is yet another subdial offering a 12-hour, dual time function. The bezel's compass markings support the mountaineering theme.
A nice touch is that just about every functional element on the dial and bezel is lumed. For this Reinhold Messner edition, the dial has a dark blue gradient treatment, the bezel is in blue ceramic, and they're matched to a 42mm bronze case. Each of the seven peaks is highlighted on the globes by a tiny red dot, and a special case back features Messner's signature, a mountains-and-ice-picks motif and other cues that mark it as a limited edition.
Limited to 262 examples, the Montblanc 1858 Geopshere Messner Limited Edition has a fairly reasonable price of $6,500 considering the interesting features it offers. It's available online from the brand now.