Mp3 Player 3.1A Call Car Charger Wireless Bluetooth Handsfree FM Transmitter Radio Receiver Audio Music Stereo Adapter Dual USB Port Quick Charger With Retail Box

2 USB charging ports to charge most USB Devices. Input 12V/24V. 1.0A USB port can read and charge function; smart 3.1A charge port that can intelligently identify Android or iPhone devices and charging. Wireless Bluetooth FM transmitter adapter for car radio, transfer calling/MP3 Music/Cellphone voices to the car speaker Built-in microphone, switch to hands-free mode automatically from music playing status when receiving calls. Answer/Reject/Hand up/Recall all in One key. Show 3 seconds of voltage when plugged into the car outlet port. Always keep the battery state health. Then it turns to automatic play mode. Bluetooth cigarette lighter adapter for music support Bluetooth /USB disk/TF card/ MP3/WMA player. Listening to music while charging. Automatically connect memorized paired when powered on..syi