Come and see our amazing products. 3-Mode: low brightness, medium brightness, high brightness (Mode switch as you desire). Best supplement to whose fill-in light is weaker/darker, or to those old smartphones without front-loading filling light. Universal to all phones, also can be used on Pad, Computer, etc. It is powered by built-in Rechargeable Battery with USB cable. Don't need extra batteries. With 36 LED bulbs will be able to provide enough lighting for you to take great selfies, providing continuous LED light, less heat and with a bright light in low light scene. Just clamp this flexible clip ring light on your smart phone and press the power button and you will get the supplementary lighting. Package Content: 1 x 36 LED ring light (white) 1 x USB cable. Pls confirm further with us if any query about packing info, inventory status and time schedule.