Features: SOUND-ACTIVATED: Built-in smart beat sensor lets the lights react to music, the patterns change according to the beats of the music, different sounds and even your voice. It's a perfect fairy light for your bedroom or party decorations. 8 MODES & BRIGHTNESS CONTROL: Comes with remote controller enables you to change the mode and brightness as you wish. The controller has 8 conventional flashing modes. Flexible DIY Decorative Lights: Silver wire can be bent and molded to any shape you want...so get creative Wrap them up inside a vase or a bottle, put them in plants or trees, hang them, wrap them around various places inside or outside, on the patio, make a beautiful centerpiece, table decorations, creating festive, softly or romantic atmosphere, prefect for bedroom, Xmas, party, wedding, Halloween, living room and artcraft etc. Battery Powered String lights: This fairy lights powered by 3*AA battery (battery not included). And the silver wires never got overheat even for a long time using, safe for family. WATERPROOF & SAFE TO USE: The string lights are rated IP65 water-resistant, heat-resistant insulated silver wire and low working voltage to ensure safe usage, perfect for indoor and outdoor ornament light, garden, stairways, corridors, yards, bedroom, wedding, party and holidays. Specification: Battery powered: 3*AA Battery (NOT included) / CR2025 battery for remote (NOT included). LED Qty: 50 / 100 pcs. Light Color: Colorful / Cool White / Warm White. Working Modes: 8 Modes. Total length: 16.4ft / 32.8ft. Package included: 1 x Music LED String Lights. 1 x Remote Control(battery not included). 1 x Battery Case