So I bought yet another pair that had the same issue of sound shorting out in one headphone until the cord was unplugged and then replugged. Es exactamente lo que esperaba. I can’t say that it is the most comfortable earphone, but then again, I cant imagine what device that goes in the ear can truly be comfortable after an hour. Love this shoe, comfortable and stylish. Sistema operativo muy fluido y rápido una excelente cámara y la batería perfectamente te dura más de un día con los datos móviles activados. I finally went online and found forums discussing the same issues. What a great value this earpiece was for me. I was not sure if it would be worth it since I did not want a screen protector that would be seen. comes with easy-to-follow instructions and all the parts you need to put it together -- all you have to have is a phillips screwdriver. As previously noted once the tension is set on the device you can easily go from free wheeling to hard resistance pedaling like climbing a hill.