Both watches are joined by an updated Montblanc 1858 Geosphere – now in Blue. This rugged-looking timepiece features a stainless steel case, beads of rice bracelet, and a pair of world time dials.

Meanwhile, the 1858 Geosphere Carbo2 0 Oxygen has rotating northern and southern hemisphere globes and a 3D laser etching of Mont Blanc mountain on the back of the case. “Each year, we’re ...