Bluetooth FM Car Transmitter MP3 Handsfree Radio Adapter Kit Dual USB Charger Product Feature: Big LCD Display: 1. 44-inch screen to better visualize phone calls, music, car battery voltage. The ideal screen size to assist you in driving safe without disturbance. Technology in Your Car: 1) Bluetooth connection; 2) Answer phone calls with the press of a button; 3) Support answering/hanging up/redial. 4) Voltmeter function to monitor the quality of your car battery; 5) 4 different ways to play music in your car, and more. Music Playing Modes: There are four ways to play your favorite songs on your car stereo: 1. Connect Bluetooth to Play Music. 2. TF Card Plays Music. 3. AUX External Sound Source Plays Music. MP3 Function: 1. Support song resources selection. 2. Supporting single song loop playback. 3. Support random playback of all songs. 4. Support Fast Forward and Quick Back Playback Function. 5. Built-in lossless audio decoding to support playing FLAC/MP3/WAV format. 6. Supporting power-off memory function. 7. 5 EQ modes: Normal, Classic, Popular, Rock and Roll, Jazz. Display: 1. Display the spectrum of sound wave. 2. Display automobile battery voltage. 3. Display FM Frequency. 4. Volume display. 5. Song Name Display. Product Specification: Type: Car MP3 Player Bluetooth Version: Bluetooth V 5.0 Material: ABS Color: Mint Green/Black Power Supply Voltage: 12V-24V Output Voltage: 5V-12V FM Transmission Frequency: 87.5-108 MHz Playing Time: Loop playback Power Supply Mode: Cigarette lighter car MP3 Dual USB Interface: 2.1A + 2.1A Working Temperature: -10 70 Package Included: 1 x Car MP3 Player