Features:Exquisite Appearance and Practical FunctionsVintage vacuum tubes bring a sense of era, LED back-light under the tubes makes it color changeable, bringing wonderful visual feast.You can know much information from it: time(12H/24H), date(the lunar or solar calendars), temperature(degrees Celsius or Fahrenheit), even can set alarm clock, with remote control and so on.More functions are elaborated in detail on the English operation manual.Unique design and compact sizeVintage VFD tubes combined with classic wood base, simple but perfect. And proper size is very suitable for desktop use in living rooms or bedrooms use and it is also an ornament.For its attractive appearance, it is also very suitable as gifts for friends, lovers, colleagues, etc.Rare Materials and Complicated Making ProcessVFD tubes were very popular but gradually stopped production in last century, vintage era sense and complex craftmanship make them worthy of being collected and with higher value.Specific Information:Input Voltage: DC 5VQuantity of Tube: 6*IV-11 TubeShell material: acrylicNet Weight: 0.2gChip: STC 15FClock chip: DS3231 with high precisionCurrent:1.5ANote:This tube model has different names like IV-11 or -11 in different countries, but the tubes are absolutely the same.Package:1 x DIY KIT IV-11 VFD Tube Clock without tube