(April 01 14:44) Forbes.com
At Watches & Wonders Geneva 2022, Montblanc unveils the 1858 Geosphere Zero Oxygen watch that is cased in an oxygen-free environment to preserve the watch and oils inside and to prevent fogging. It will go to Mt. Everest in May on the wrist of Nimsdai Purja for real-life testing.
You can find the original article
here