Description: Different numbers are engraved on the transparent acrylic, and then the digital effect is refracted by the bright RGB lamp, which simulates the display effect of the fluorescent tube glow clock. Short press the setting key (square icon) to pause the color change at any time, so that the favorite color can be displayed fixedly. Short press the switch key (triangle icon) to switch between different color gradient effects. Enter the music spectrum , you only need to put out the music playback device (mobile phone, speaker, MP3 player, etc.) to display the music spectrum bounce effect, the effect is better when placed on the back of the microphone. Each number produces different gradient colors, forming rainbow colors. A side colored light effect is added at the bottom. There are a variety of time digital display transformation animation effects and multiple switching animations. Specification: Material: Acrylic Size Chart: 252x70x46mm/9.92x2.76x1.81inch Package Includes: 1x Nixie Tube Clock Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!