1、Multifunctional: Car MP3 player is multifunctional, it is an fm transmitter, charger, wireless player, with strong practicality. 2、Cool Lighting: Car wireless adapter with colorful marquee effect, more cool and fashionable when using. 3、Fast Charging: Car charger adapter is USB fast charger, PD car charger is 20W, don't worry about running out of power. 4、Stable Transmission: Car wireless adapter adopts BT 5.0 version, stable transmission and faster efficiency. 5、Memory Function: FM transmitter has voltage detection and automatic power off memory function. When restarting, it will continue to play the music you heard last time. Item Type: Car MP3 Player Material: Plastic,Electronics BT Version: BT 5.0 Working Voltage: 12-24V USB Output: USB 5v 3.1A / 5V 1A USB C Output: 5V 3.1A Playback Format: MP3 Signal to Noise Ratio: >60db Distortion: <0.1% BT Sound Processing: A2DP (Advanced Audio Distribution Pattern) Function. BT Transmission Distance: 5 Meters Effective Distance of BT Microphone: 0.5-2 Meters FM Frequency: 87.5-108.0mhz FM Mode: Stereo Digital PLL Frequency Lock Support U Disk Mode: Maximum 32GB 1 x Car MP3 Player 1 x User Manual