This fairy string lights shine a fascinating & colorful light, and are specially designed to decorate any space you want and beautify your every night. ・ The LED String Fairy Lights is no need battery, energy saving and environmental performance ・ The copper wired string light, easily twisted, with sync to music will change the speed with the music rhythm ・ With timer function, you could set any time as you like to save much more electricity ・ With the App, Download APP "LedBle" (IOS /Android), connect the light via Bluetooth-compatible you can easily change the color and the mode of lights, NO NEED a remote controller. The starry light is dimmable within a 12m range with the app ・ The led string lights could drag the brightness adjustment button on the APP to achieve any degree of dimming or glowing, instead of choosing from several brightness levels ・ The fairy string lights is with memory function, will keep working and flashing mode even if the Bluetooth-compatible is out of connect, as well as keeping last of the timer setting, no need to worry about wasting electricity ・ This fairy string light is waterproof, suit for indoor and outdoor decoration, creating festive, soft or romantic atmosphere Specification: ・ Size: ・ 2 meters with 20 lights ・ 5 meters with 50 lights ・ 10 meters with 100 lights ・ 20 meters with 200 lights Package included: ・1xRGB LED String Light ・Other items not included