Multifunction Dual USB car Bluetooth receiver, 5.0 lossless mp3 player, FM Bluetooth receiver, car music U disk, fast charging Bluetooth APP music, support U disk playback, only fast charge, universal mobile phone model, Bluetooth hands-free phone, voltage monitoring, navigation WeChat broadcast, smart protection chip No limit to mobile phones and models, applicable to mainstream 12V-24V models on the market, compatible with a large number of APPs Support Bluetooth/U disk; compatible with various brands of U disk, adjust the car radio frequency and Bluetooth MP3 frequency to be consistent to play U disk songs Smart Bluetooth 5.0, a new generation chip, rapid response, constant temperature, and constant current charging, no harm, making charging safer The 3.1A dual USB interface is charged at the same time, and the mobile phone and tablet are charged at the same time without affecting the speed Numerical control display, battery voltage, real-time monitoring, safer driving. Bluetooth hands-free call, one-key operation, worry-free driving. Press once to answer/long press to reject, double-click the button to dial the most recent call in the call log Power-off memory playback function; auto-reconnect after power-on, memory frequency, the track restarts after power-off and starts to play from the first sentence of the disconnected song. (If you need to remember to the second after power off, just press the pause button before power off) Navigation voice broadcast, artificial intelligence has been improved again, one-click Bluetooth link, voice broadcast is more accurate Specifications: Material: ABS Size: 36 x 45 x 73mm Working voltage: 12V-24V Input current: 3.1A Display: blue digital tube display Transmitting frequency: 87.5-108MHZ Effective distance: about 10m Bluetooth version: 5.0 Support expansion: U disk≤32G Transmit distance: