"Awesome Bluetooth device"4.0 starson by sokjunk
Pros: Sound quality is very good. Earpiece is comfortable. Must update the firmware to have it work properly also very cool if you have an iphone and download the free app. Very pleased with the Sound ID 510.
Cons: can't turn the music on and off from the earpiece. The music will not start automatically after answering a call. I have to unplug the phone, plug back in and turn the music back on.