Montblanc Geosphere Cufflinks – with world map that glows in the dark These elegant Montblanc Geosphere cufflinks exude pure class. The central detailing features the geography of the Northern and Southern hemispheres, reflecting the design inspiration from Montblanc’s renowned Geosphere watch collection. What makes these cufflinks truly special is that the world map glows in the dark – clearly visible in some of the included photos. This subtle effect adds a unique and stylish touch, both by day and at night. A refined accessory for the modern gentleman with an eye for detail and quality.