In 2015 Montblanc launched the Villeret Tourbillon Cylindrique Geosphere Vasco da Gama, an ultra-high-end Minerva based word timer, which featured southern and northern hemisphere displays. Later in 2018, they introduced a more affordable non-tourbillon version called the 1858 Geosphere, but this time the hemispheres were displayed on a vertical axis. Since then, there have been multiple different color combinations and materials, such as bronze and titanium, on bracelets, and even on a bund strap. New for 2024 is the 1858 Geosphere 0 Oxygen South Pole Limited Edition. 

 

This new 42mm x 12.8mm piece is crafted in lightweight titanium, with a blue aluminum bezel insert, which features green lumed cardinal points. The hour and minute hands, along with the numbers and markers also glow green. While the two domed hemisphere globes, together with the second time zone displayed at 9 o?clock glow blue. The dial features a sfumato iced blue glacier pattern, which must be seen in person to truly admire. It comes with a matching interchangeable titanium bracelet and a gray rope patterned textile strap.
The neat thing about these watches is their caliber 29.25 movement, a combination of a Sellita SW300 base and a proprietary world-time module. The latter allows you to independently control the hour hand via the crown, as well as the second time zone via a hidden pusher at 10 o?clock, making it a perfect travel companion and explorer. The 0 Oxygen in the model n...