Car bluetooth FM Transmitter MP3 Player with Dual USB Ports Support USB Flash Drive/TF Car Kit

Feature: Wireless transmit the music and phone call to your car stereo system. Fast bluetooth pairing.Once paired,Auto-connect next time. Dual USB port supplies fast charging,the port of 5V/1A also can be used to read U disk. Detect and display the voltage of car battery. Compact and light weight, easy to take. Specification: Material: ABS bluetooth version: V4.2 bluetooth Pairing Name: HK203 bluetoothProtocol: HFP/HSP.OPP,A2DP,AVRCP Screen Display: Red LED Frequency range: 87.5-108.0MHz Input Voltage: 12-24V Output Current: 5V/3.1A Music Format: MP3,WMA,WAV,FLAC,APE Micro SD/TF,U Disk(Max capacity): 64GB FM Transmit Distance: up to 10m Weight: 0.068lb/31g Size: 2.75*1.97*1.42 inch(7*5*3.6cm) How To Adjust FM: 1.Long press the call button until the digital frequency flashes to enter FM mode 2.Rotate the call button to achieve FM frequency increase/decrease Package Included: 1 X bluetooth FM Transmitter 1 X User Manual