The Portable Audio Music Streaming Receiver makes you listen to music from your mobile phone without the cables. When the call comes, short press the middle button to answer the calling or long press the button to refuse it. Telephone chatting is free and relaxed. It is designed for home AV systems, home stereos, headphones, automobile or motorcycle speakers, boats, RVS and more. Simple operation, normal speaker become hands-free Bluetooth speaker magically, portable for vehicle mounted systems. Compatible with all Smartphones.