Features:New high quality.Usb3.1a dual charging ports enable charging when listening to songs.Bluetooth versio n 5.0 supports Bluetooth audio playback, voice navigation and Bluetooth Handsfree calling.Support Bluetooth /u disk and plug and play.Full frequency FM wireless transmission technology can directly play audio files on Bluetooth mobile phone /u disk.The LED display screen controls the voltage in real time, making driving safer.Support power-off memory function.The smart chip has many protection functions, such as overload, overload, overheating, overvoltage, short circuit protection, anti burn and so on, making it safer to use.It is applicable to all vehicles with voltage of 12v-24v.Specifications:Material: ABSBluetooth version: BT 5.0Effective distance: 10MCharging interface: USB 3.1a+1.0aCharging current: 5v/3.1a, 5v/1.0aVoltage: 12-24VTransmission frequency: 87.5mhz-108.0mhzFunctions: dual USB charging, USB flash disk, FM, Bluetooth music, hands-free call, Bluetooth navigation, led voltage detection, etc.File type: mp3/wma/wav/flacApplicable models: 12v-24v vehicle, SUV, truckColor: Black