Headphone Accessories -Universal Bluetooth FM Transmitter 2 Inch LED Screen For All Smartphones Highlights Generic Brand Universal Bluetooth FM Transmitter 2 Inch LED Screen For All Smartphones Description: Support Bluetooth / U disk: U disk plug and play, adjust the car radio frequency and Bluetooth MP3 frequency to be consistent to play U disk songs. Universal for Android / IOS: unlimited mobile phones and models, applicable to mainstream 12V-24V models on the market, compatible with a large number of applications Smart quick charge: 3.1A dual USB smart quick charge, two USB ports can be charged at the same time, up to 3.1A, mobile phones and tablets can be charged at the same time. Safe and stable / Smart Bluetooth 5.0: a new generation of chips respond quickly, constant temperature and constant current charging, no harm, making charging safer Memory function: power-off memory playback function, automatic reconnect after power on, memory frequency, restart after song power off, and start playing from the first phrase of disconnected song Specification: Working Voltage: 12V-24V Power Current input: 3.1A Display screen: blue digital display Transmission efficiency: 87.5-108Mhz Effective distance: about 10.5 meters Bluetooth version: Bluetooth 5.0 Support extension: U disk 32G Launch distance: