USB Bluetooth Hands-free Phone Calling Transmitter Car Aux Music Audio Stereo Adapter Receiver MP3 Player TF Card Reader

Features: USB power supply Supports audio output Play music (MP3 format) saved in micro SD card Support BT stereo music player(A2DP) Support BT hands-free Answer/Hang up/Reject/Redial Auto-memory function while power off Used as TF card reader RFM-523288 ???? Bluetooth Standard: Bluetooth V3.0 Bluetooth Profile: A2DP/Advanced Audio Distribution Profile Bluetooth Transmission Distance: Up to 10 meters Function: MP3, Microphone, Handsfree Net Weight: 10 g / 0.35 oz Size: 5.7 x 2.2 x 1.1 mm / 0.22 x 0.09 x 0.04 inch