【App Control & 16 Million Color Adjustment】This ambient car light is easily operated via a smartphone app compatible with iOS and Android. You can freely select from 16 million colors and it features 29 preset modes. You can adjust the light's on/off, brightness, and speed freely through the app. 【Music Sync & Dynamic Lighting】Built-in high-sensitivity microphone allows the car LED lights to react to music and surrounding sounds. The colors and brightness automatically adjust to the rhythm, enhancing the atmosphere during your drive. It's an ambient light that makes your car interior more enjoyable. 【Wide Compatibility】Powered by a DC 12V car charger (with built-in fuse), it's compatible with almost all car models, including trucks, SUVs, RVs, and boats. It provides a comfortable and dynamic driving experience. 【6m Fiber Optic Integrated Design & Free Cut】The fiber optic and LED strip are integrated, and it adopts a cut-and-bendable design. You can freely adjust the length to match your car's interior, making it an ambient light that supports various car interior designs. 【Safety & Waterproof】The operating voltage is 12V, and it has short-circuit protection and a memory function. It's waterproof and generates very little heat, making it safe to install even in places accessible to children. 【Notice】When using the remote control for the first time, you need to remove the terminal tape behind the battery.