Vintage Nixie Tube Clock with 4xIN-12 displays & Alarm & Blue Backlight & Black Glossy Wooden case CHRONIX Clock displays time on 4 USSR IN-12 nixie tubes (Cold War era neon gas displays) Handcrafted wooden case with transparent acrylic enclosure, black glossy finish High quality power adapter with plug suitable for buyer's location is included Each clock is carefully hand assembled with new high quality parts 4 brightness levels of tubes with On/Off blue LED backlight