Feature: 1. Nixie Tube Clock Module: This module is designed to bring a touch of vintage decor to any space, adding a unique charm that is both nostalgic and modern, making it a beautiful addition to your home decor 2. Accurate Timing: Equipped with high performance clock chip, this module ensures a high accuracy, with an annual error rate of less than one minute, you can rely on it to keep you punctual and on schedule 3. Easy Setting: Setting time is a breeze, thanks to its intuitive and user friendly design. With just a single click of the Set key and adjustments using the Up and Down keys, easily set the time to your preference 4. Multiple Functions: This clock module offers flexibility and convenience with its support for 12 and 24 hour display switching. And with a sleep mode function, you can easily set it to dim the lights or turn off 5. Versatile Use: The Nixie clock circuit board supports multiple color switching, sleep mode, refresh time setting, back color setting and other functions, adding diversity to your creativity and suitable for all ages Specification: Item Type: Digital Tube Clock Module Input Voltage: 5V 2A Battery: 1 x CR927 Battery (not included) Function: Time Backlight Color (multiple color switching) 12/24 Hour Module Sleep Module (22:00-07:59 No Display, 08:00-21:59 Display) can be set to turn on or off Refresh Time Setting (1-9 minutes), auto save settings Set Time: Click Set to enter time setting. Click Up or Down to set time, then click Set to confirm. 12/24 Hour Module: Click Up to switch Sleep Module: Long press Set without display, enters sleep mode (22:00-07:00 No Display, 07:00-22:00 Display). Display all 0 digits in sleep mode. Set Refresh Time: Long press UP, then click UP or Down. Refresh can be set to 1-9 minutes (Click Set to change LED brightness of 1-5). Set Backlight Color: Click Down to change color. When color changes, it will automatically change color (changes color each day) or fixed color.. Package List: 1 x Digital Tube Clock Module