We went to use it today because we are out of town and there is a whole in it. I can answer calls, change the song, and they pair automatically. Id suggest searching a review on youtube, because the written description in manual doesnt get into every detail that lets you customize your listening preferences. Edit: I was able to fix my M-100?s by Unscrewing each ear piece out and jossling the wires around a bit. I really like how the soles of these flip flops feel. Strings hanging out, poorly sewn, the weaving on the base of the shoes already show signs of fraying. It was easy to install and allowed us to get rid of a traditional coat rack where everything was piled on each other. Only thing I didn?t like was there was no inner hook to hook on the fence while playing. Salió por primera vez a la venta, si no mal recuerdo, a finales del 2013. If I was buying again, Id probably go for the HD600s or higher.