So basically, what this thing does its allows you to play music wirelessly in your car, home or wherever you need it. Provided you have an aux jack of course. You can enjoy listening to music or taking phone calls without cables dangling around your steering wheel and most important, without breaking the law. Features - Support iPhones, iPads, Android phone and other smart phones which with Bluetooth A2DP function. - Change the traditional Car Stereo System and Home Audio System into Bluetooth-Enable one in seconds. - Support Hands-Free calls, can connect microphone and support phone calling through Bluetooth receiver - Bluetooth V3.0+EDR music receiver, transmission range up to 10m - Sleep mode for saving power. Specifications: - Type: Bluetooth Audio Receiver - Material: Plastic - Quantity: 1 pcs - Item Colour: Black - Bluetooth Version: V3.0 + EDR, class 2 - Frequency: 2.4GHz - Transmission Range: Up to 10m - Port: A2DP I/O 3.5mm port, Micro USB charging port - Operation Time: Up to 8h - Certification: CE, FCC, BQB Size 5.5 x 2.5 x 1cm Net Weight 0.013kg What's in the box 1x Bluetooth 3.0 Audio Receiver 1x Aux Male to Male adapter 1x Micro USB cable