Ring Light for Video Conference/Makeup/Photography/YouTube Videos/Vlog/TIK Tok/Live Ring Light Clip on Laptop Monitor for Remote Working/Zoom Calls/Self Broadcasting/Live Streaming/YouTube Video/TikTok What power supply do I need to use? Please use a 5V 2A or higher standard USB power supply, such as a mobile phone charger, computer USB, power bank, etc. Why is my light flashing? Please replace the USB power supply with another one for testing. Generally, it is caused by insufficient power supply, and some computers may have insufficient current in the front USB. Please use the back USB instead. What fixed lamp is used? Fixed with clips, with a maximum thickness of less than 1.35 inches, it can be clipped onto a monitor or desk. Please pay attention to the thickness. Christmas,Parties,Home Decor,Gift,just play your imagination. Visit the Store it is recommended to purchase multiple letters for better dynamic effects (Visit the selfila Store or search SELFILA Letter Light). Visit the Store