Infrared Remote Control and App Control: The string lights come with an infrared remote control, allowing you to switch between multiple flashing modes. Alternatively, scan the QR code on the controller to download the “Ideal LED” app, enabling you to easily adjust your preferred color, brightness, and mode using your phone. (Before use, please calibrate colors via the app to avoid color inaccuracies. Calibration is only possible through the app. Steps: ‘Settings’ → “Color correction”) Customize Festival Atmosphere: Colorful fairy light has high-end control technology that supports each LED light bead to choose independently from 16 million colors, you can switch to your favorite color and mode according to the different festival atmosphere and overall moods such as Halloween, Christmas, etc Multiple Dynamic Modes: The multi-functional preset modes of the holiday illuminations can meet various needs for any occasion. You can choose the corresponding mode from different use scenes such as tree, yard, garden, fence, etc., which can more accurately provide you with diversified light celebrations Music and Voice Sync: Switch to music mode, you can choose your favorite music and the lights will bounce to the rhythm of your favorite song. Multi-color string light use microphone to detect and match the music to synchronize with the music, turning your space into a dynamic light show. (Cannot play music) High Quality Materials: The colorful lights are designed with PVC coating and high waterproof rating (IP65), -20 °C cold resistance, durable materials, both durable and safe, using fully glued lamp beads, not easy to knot, not easy to break, perfect for indoor and outdoor use. (Remote is not waterproof) Indoor and Outdoor Use: You can install the fairy string light on an outdoor tree or ladder, providing a special interactive experience for family and friends during the holiday season. It can be used as Christmas tree lights, bedroom decorations, or to create a festive atmosphere for festivals, parties, weddings and so on Electight Fairy Lights 66FT/20M, [APP & Remote Control] 200 LEDs RGB Smart IC Multicolor String Lights, Music/Voice Sync Color Changing, IP65 Waterproof String Lights for Bedroom, Party, Wedding, DIY