Nixie Clock by Nixie Dream IN-14 Nixie Tubes Vintage Retro Desk Fully Assembled and Tested Comes in Premium Gift Packaging Nixie clock comes in a premium gift packaging 2 years warranty including nixie tubes Nixie tubes are easily replaceable. They are held in place using copper pin connectors. 4 display toggle effects: slot machine, fading, cross-fading, Underneath nixie tubes RGB, candle red flickering, UV lighting.