Avatar Controls Smart outdoor string lights are equipped with impact and weather-resistant bulbs and have been designed for outdoor use. Music rhythm mode supports the Fairy Flashing Lights multicolor to sync with any music coming out of the phone speaker and any other speaker in the room and dance the lights along with beats of music. It ideal for using on the Christmas tree, photo wall, drifting bottle, stairs, curtain, or hanging down from the ceiling. The smart string lights work with both Alexa and Google assistant to turn on/off and change color via voice control.