With this limited edition timepiece showcasing a design as strong as the innovation within, Montblanc pushes the concept of oxygen – the central element in any intrepid ascent – even further than before. The watch case material, the CARBO₂, is created using a pioneering process development that captures CO₂ from biogas production and mineral wastes from recycling factories. Reinforcing the theme of adventure, the 43.5 mm case totally devoid of oxygen comes with an engraved luminous blue outline ...