This is a smart desk clock with multiple function and all remote control with bluetooth (Android and IOS has the app to control clock) Two main function of the clock : 1.Time display (12/24 format) 2.Date display Two ways of displaying time: 1 Normal display mode 2 Divergence meter display mode Two ways of random sequence displaying: 1.Divergence Changing 2.All number Refreshing by sequence User defined number sequence displaying RGBLED setting Time and Date setting Power supplied by phone adapter (5V 1.5A) and a typc-C charging line. (Power bank, USB , mobile phone with OTG function , etc.) The price is for whole assembled clock with 8 Nixie tube DHL shipping, guarantee for 100% safe delivering Please feel free to ask me any question! Wish you enjoy everything fun! Attention, The clock needs to be assembled after you place order, it needs about 7-days for preparing sending and ship out.