Bluetooth Music Receiver Audio Streaming 3.5mm Stereo Home Car Wireless Adapter Bluetooth V3.0+EDR,Support class 2,A2DP V1.2~V4.0 stereo profile,Get high quality audio sound 3.5mm audio AUX output,Receive your phone music to your car speaker or home audio system Built-in microphone,you can answer calling hands-free in car Built-in 160mA lithium battery. rechargeable,5V power supply,provides up to 5 hours play and talk time, 360 hours standby time Wide Compatibility,Compatible with most Bluetooth enabled devices like smartphone, MP3, tablet, etc, ideal for home or vehicle audio systems.