Features: 1.Dual Car Charger: The bluetooth car adapter coming with 2 USB ports, you can charge two devices simultaneously. One universal USB charging port (5V/1A) also functions as a U disk port for play music. 2.Hands Free Calling: Built in microphone, switch to hands free mode automatically from music playing status when receiving calls. Press only one button, you can take a hands free phone call easily and safely. 3.Bluetooth 5.0: Support bluetooth 5.0, bluetooth radio transmitter provides a stronger signal and higher transmission, compatible with all bluetooth types and can avoid the problems of lost connection. 4.Noise Cancellation: Noise cancellation technology and high performance microphones ensure nothing interrupts your calls by filtering out road and wind noise, make the call sound clearer. 5.Music Playback: Support bluetooth music, U disk, TF card music playback. Plug and play, enjoy more high definition audio sources. With anti interference performance, you can listen to music while charging. Specification: Item Type: Bluetooth Car Adapter Material: ABS+Metal Working Voltage: 12V-24V Output Voltage: DC/5V LED Display Screen: Approx. 2.8cm/1.1in Bluetooth Version: Bluetooth 5.0 Transmitting Frequency: 87.5-108MHz Input Voltage: 12V/24V Output Current/Fast Charging: OUtput1: 5V/2.4A(MAX) OUtput2: 5V/2.4A, 9V/1.75A, 12V/1.25A Support Expansion: U disk /TF card /64G Characteristic: Double USB 3.1A fast charging, battery voltage detection Support Bluetooth music /TF card /U disk playback, support Bluetooth hands-free calls Orange LED screen, can display frequency, song serial number and working status information Support folder switching playback function, song classification playback Support power off memory function 2 mobile phones can be charged at the same time and can be charged while listening to songs Noise cancellation function, built-in noise cancellation circuit, make the call sound clearer