I have never seen such an odd gadget like this. It’s a USB charger, Bluetooth music streamer, and operates as a hands-free device for your cellphone! You use the Bluetooth A2DP to transfer music from your cellphone to your car stereo, the hands-free function also has a remote control to your phonebook. The USB charger can charge all USB gadgets too, what more can you ask for? $79.99
