Vintage Nixie Tube Clock with 6xIN-12 displays & Alarm & Blue Backlight & Aluminum case CHRONIX Clock displays time on 6 USSR IN-12 nixie tubes (Cold War era neon gas displays) Aluminum CNC machined case with transparent acrylic enclosure 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