No Assembly Needed Easy to use nixie tube clock simply plug in the included TypeC cable and USB adapter to start using it immediately without any complicated assembly required Full Customization Features RGB LED tubes with 9 different display modes allowing you to manually adjust colors and lighting effects such as rainbow gradient breathing display flowing water gradient and timer modes 1224 Hr Time Format Easily set date and time choose 1224hour format and adjust brightness preferences without the need for PC software or drivers Screen can also be turned off as needed Memory Backup Comes with USB port adapter and TypeC cable for power with Memory Backup feature saving color and time settings in case of power outage USB Charge Ports Doubles as a charging station with two 5V 1A USB ports on the back for charging multiple devices simultaneously reducing clutter and providing convenience Great Gift Idea Stylish digital clock makes a great gift for any occasion and adds sophistication to room decor Perfect for kids teens friends or family members