Description:Quick Charge 3.1: 3.1A dual USB charging, for 3.1A, another for 1A port charging, and quickly charge compatible devices to 80%.Optional 7-color LED: Support 7 colors LED backlight, including red/green/blue/yellow-green/purple/cyan/orange, with the ambient light in the car to add mood to the night.Safety Function: Equipped with multiple protections such as voltage detection function, over power protection, over current protection, short circuit protection, over voltage, etc. It is more assured to use.U Disk/TF Plug-and-play: You can play music on the car stereo via Bluetooth/U disk/TF card, Bluetooth hands-free call, -key operation, advanced noise reduction technology will ensure the quality, no freeze, Make the sound quality more shocking.Wide Compatibility: Adapt to 12V~24V car models, compatible with all kinds of mobile phones, tablets, earphones, MP3 and other devices.Specification:Size: Approx. 37x47x87mm/1.45x1.85x3.42inchColor: BlackMaterial: PlasticName: Colorful Car Bluetooth MP3Bluetooth version: BT5.0Support expansion: U disk/TF cardOutput current: 3.1ADisplay: frequency LED displayMaterial: PlasticUse models: can be used for 12V~24V carsPackage Includes:1xBluetooth Car Charger1xUser ManualNote:1.Please allow 1~3 cm error due to manual measurement, thanks.2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, thank you.