Black Retro Nixie Clock - Postmodern Design with Soviet Nixie Tubes Made During the Cold War Era - Wooden Enclosure Handcrafted By Nuvitron Handcrafted wooden enclosure with a polyurethane finish Nixie tubes from the Cold-War era - guaranteed to be at least 30 years old Postmodern aesthetic - A true survivor from the past This clock work in the 5 continents because it accepts 110V and 220V - DC power adapter included Each piece takes 22 hours of work from a team of skillful artisans