Five stars~~~ Overall very happy with my purchase. The sound the headset produces is clear and punchy. Reading some reviews if appears that some bikes will place the childs feet dangerously close to the front wheel and has caused injuries. Got them to pair once with my Samsung phone but the sound quality was not good. Provare per credere! The picture looks so much better than the actual shoe. But no tools were required and I could configure it how I wanted. More importantly, theyre comfortable because theyre small enough for small ears! its like they rely on the vibration to simulate bass.