Thank you for viewing! I opened it after purchase, but I didn't use it, so it's clean. 【App Control & 16 Million Color Adjustment】This ambient light for cars can be easily operated with a smartphone app compatible with iOS and Android. You can freely select from 16 million colors and it has 29 preset modes. You can adjust the light's on/off, brightness, and speed with the app. 【Music Sync & Dynamic Lighting】Built-in high-sensitivity microphone, the in-car LED lights react to music and surrounding sounds. It automatically adjusts the color and brightness to the rhythm, enhancing the atmosphere during the drive. It's an ambient light that makes the interior of your car more enjoyable. 【Wide Compatibility】Powered by a DC 12V car charger (built-in fuse), it supports 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 & bendable design. You can freely adjust the length to match the interior of your car, and it supports various car interior designs. 【Safety & Waterproof】The operating voltage is 12V, and it has short-circuit protection and a memory function. It is 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.