Wireless Bluetoo 3.5mm Aux Audio Stereo Music Car Receiver Adapter with Hands free Calling for Home Stereo Speaker System, Headphone Speaker fits iPhone 7 Plus 8 X, Samsung S8+ S9 S7 Note 8 6 Android Music or call switching, free and relaxed. Super clear and flow conversation effect. Easy to use wireless music and sound solution for your existing wired headphones, speakers and stereos, great for car stereo system too. Simple and Easy Wireless Set-Up, Automatically connect, if you need the cell phone connect the receiver automatically, just turn on the Bluetooth of the cell phone first, and then turn on the Bluetooth receiver. Two-link: can connect two Bluetooth devices at the same time. Over length receiving distance, can reach up to 30 feet in open space without cables. Simple operation, normal speaker become hands-free Bluetooth speaker magically, portable for vehicle mounted systems.