Time can be seen in the dark on watches because of specific materials deposited mostly on the hands and indexes. The most common of these is called Super-LumiNova, which has the ability to charge itself using stock sunlight energy. Super-LumiNova, which is produced by one single company called Tritec, the only firm authorized to produce this material, is a powder mixed then with a resin. And it is now used by almost all Swiss brands. The WATCHES TV recently attended the EPHJ-EMPT fair in Geneva, the biggest trade show for suppliers in watchmaking, though suppliers for medical industries also attend. We were able to interview Albert Zeller, son of Tritec’s current CEO, for more details on this almost magic substance.