Features: The fairy light string is designed with USB Power, which can be connected with your intelligent phone app Bluetooth technology. convenient to control the light in far distance, which can change its light color according to the music as wellz. The light can be defectively controlled by the controller conveniently. There are many light colors and many light modes for you to choose, brightness levels available, timer modes to suffice your different using needs. Each LEDs on the unique Christmas light string is a smart bulbs that is fully programmable.You either select pre-made light designs and animations from the app or even program your own design to match your favorite sports teams colors, and unique animation, and more. The fairy light string is widely suitable for party, bedroom, home, garden, patio, balcony, wall, window and so on. Note: The light string can not able to be freely cut by yourself. Specification: Type: Bluetooth fairy light string Light color: RGB/Dream Color(RGBIC) Length:5M/10M/15M/20M LEDs Quantity: 100LEDs / 200LEDs Input voltage: 5V (USB Power) Bluetooth frequency: 2.4G Waterproof: IP65