You turn it up loud and it doesnt make any noise. I didnt realize how small these would really be. Thick sole, little arch support, super soft straps, way cute, STURDY and perfect price! Few months ago a ordered a bar from another manufacturer and had not problem. I bought size 12-13 and they are way too big for her. Detailed playback? Yeah the 846s have it. Um. ? Tienen multipunto, es decir pueden conectarse a 2 dispositivos a la vez. These did not work AT ALL for us. I can easily get over that, though.