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Please note that to operate, a Nixie tube requires DC 170 V high voltage. When in operation, please do not remove the shell and do not touch it without the shell. Rare: The production of the VFD Tube was suspended in the 1980s, so it is not only considered to be a work of art, but also useful and practical; With high craftsmanship, its strong retro feel makes you feel like you’re in the last century and can decorate your home more elegantly with a unique sense of the era. Rare: The production of the VFD Tube was suspended in the 1980s, so it is not only considered to be a work of art, but also useful and practical; With high craftsmanship, its strong retro feel makes you feel like you’re in the last century and can decorate your home more elegantly with a unique sense of the era. Collection value: Its complicated craft makes it harder for so many processes to produce, but its exquisite design attracts the attention of many people; with clear display; With clear display: The large size of the IV-11 vacuum fluorescent display, the larger figure and the longer tube make the number clearer. With pretty multi-colour: It has different floral colours that provide a wonderful visual experience, and the changeable lights will elate you; Very physically attractive: It is really beautiful and a suitable gift for friends, loved ones, colleagues, etc. Multifunctional: Even though the VFD tube clock is a product with a sense of age, its functions are still amazing. You can clearly see the time (12H / 24H), the date (the lunar or solar calendar), the temperature (degrees Celsius or Fahrenheit), and even set an alarm clock and so on. You will fully understand its functions when you read the English instruction manual.; Product description Parameters: Input voltage: DC 5 V. Number of tubes: 6 x IV-11 tube. Tube size: 60 mm (height) and 22.5 mm (diameter). Shell size (excluding tubes): 211 x 28 x 70 mm / 8.31 x 1.10 x 2.76 inches. Shell material: Acrylic. Net weight: 325 g / 0.72 lb. Chip: STC 15F. Clock chip: DS3231 with high precision. Package contents: 1 x IV-11 Nixie tube clock (DIY kit / complete). 1 x Infrared remote control. 1 x Power adapter. 1 x User manual (English).; Product description Parameters: Input voltage: DC 5 V. Number of tubes: 6 x IV-11 tube. Tube size: 60 mm (height) and 22.5 mm (diameter). Shell size (excluding tubes): 211 x 28 x 70 mm / 8.31 x 1.10 x 2.76 inches. Shell material: Acrylic. Net weight: 325 g / 0.72 lb. Chip: STC 15F. Clock chip: DS3231 with high precision. Package contents: 1 x IV-11 Nixie tube clock (DIY kit / complete). 1 x Infrared remote control. 1 x Power adapter. 1 x User manual (English).; Parameters: Input voltage: DC 5 V. Number of tubes: 6 x IV-11 tube. Tube size: 60 mm (height) and 22.5 mm (diameter). Shell size (excluding tubes): 211 x 28 x 70 mm / 8.31 x 1.10 x 2.76 inches. Shell material: Acrylic. Net weight: 325 g / 0.72 lb. Chip: STC 15F. Clock chip: DS3231 with high precision. Package contents: 1 x IV-11 Nixie tube clock (DIY kit / complete). 1 x Infrared remote control. 1 x Power adapter. 1 x User manual (English).