This Bluetooth music receiver can be used for almost all audio receivers with jack 3.5mm input plug. Easy to install and to pair with your cell phone or MP3, you can use it on your stereo system or your car, use it as a music player or to connect two cell phones to your car if it already has Bluetooth. Bluetooth 4.1 + EDR, 10m transmission distance It enables you to answer phone calls Supports Bluetooth A2DP stereo Supports TF card playback function Frequency: 2.4GHz CE, FCC, BQB certifications 3.5mm stereo input socket Up to 8 working hours Power by mini USB cable charge Sleep mode, energy – saving