Montblanc1858 Geosphere 0 Oxygen The 8000 Automatic 42mm Watch Limited Edition Various Necklace Pendant Its distinctive circular slide rule

Its distinctive circular slide rule bezel allows for complex navigational calculations

This version features a white dial paired with an integrated steel bracelet

Montblanc Belt Horseshoe Palladium Finish Reversible Blue And Grainy Black Leather 30 mm Style Numb

self-winding mechanical movement beating at 28

it's a timepiece powered by any light with Eco-Drive technology

Montblanc1858 Geosphere 0 Oxygen The 8000 Automatic 42mm Watch Limited Edition Various Necklace Pendant Its distinctive circular slide ruleThe Montblanc 1858 Geosphere 0 Oxygen Limited Edition is totally devoid of oxygen to improve the watch's performance and precision over time, even in some of the harshest mountain environment. Zero oxygen inside the movement not only eliminates fogging, which can occur with drastic temperature changes at altitude, but also prevents oxidization. Without oxygen, all the components last far longer and will provide greater precision over time. The