Yeah, we know what you are thinking; Montblanc, that’s the pen brand isn’t it?

Well it is, but they are getting a reputation for creating some superb watches too and the latest 1858 Geosphere  Oxygen chrono shows that they can produce something that looks stunning, and delivers on tech features too. It made its debut at Watches & Wonders this week and is on pre-order.

Here’s the word on this limited edition;

Extreme adventure calls for extreme technology, like a movement that is both sealed and devoid of oxygen. The zero-oxygen feature on this Geosphere was created to improve the watch’s mountaineering performance by eliminating fogging, which can occur during drastic temperature changes at altitude.

Another new feature of the Geosphere line is the inclusion of a chronograph, thanks to the Manufacture MB 29.27 movement. It is housed in a lightweight 44mm satin-brushed and polished titanium case, and on the case back you’ll find a 3D engraving of Mount Everest.

Limited to just 290 pieces, the 0 Oxygen will be put to the test by alpinist Nimsdai Purja during an expedition to the summit of Mount Everest, without supplemental oxygen.

Case width is 44m, the dial features two 3D globes, which show day vs night. Movement is in-house and a new MB29 calibre.

Could be based on a sister movement from the Richemont family and they have lots to choose from, with JLC, Vacheron, A Lange & Sohne, Roger Dubois, IWC and more in the stable. Makes sense to share base watch engines across the brands and let each house tweak a chrono their way. Just saying.

Cost is £7000. More here.