The Montblanc 1858 product line expresses the spirit of mountain exploration, embodying the modern trend of returning to nature. The Montblanc 1858 Geosphere UltraBlack is dedicated to the world’s Seven Summit mountaineering challenge, the holy grail of mountaineering adventures. Combined 42mm stainless steel case with black and contrasting white design details. The timepiece features a manufacture world-time complication developed by Montblanc in Villeret: two domed globes, turning in opposite directions, that complete a full rotation in 24 hours surrounded by a scale with the 24 time zones, along with a day and night indication in contrasting colours. This provides an instinctive way of appreciating the different time zones, aided by luminescent continents for increased visibility and performance at night. The timepiece is completed with a black calf leather strap with beige stitching.