RGB backlight colors - Red Green Blue Purple Yellow Teal Pinkish (selectable). Has the ability to automatically change colors daily or backlight off all together, digits only Ah!Power supply - AC/adapter (US) to 5Vdc / 2.4Amp with a 3ft standard USB/USB micro cable (included). USB cable can be disconnected from adapter and plugged into USB on computer or powerbank.
Built in battery socket for time backup during power interruptions (battery included and installed). Clock size - 4 7/8 X 1 7/8 x 1 3/4 inches (approximately). Cock directions will be sent with unit. Contact me with any questions.Thanks for looking and have a great day. The item "Nixie clock IN-12 Assembled with Tubes Power Supply Backup Battery In the USA" is in sale since Tuesday, June 8, 2021. This item is in the category "Home & Garden\Home Décor\Clocks\Alarm Clocks & Clock Radios". The seller is "abphitec1" and is located in Cherry, Illinois. This item can be shipped to United States.