To be avoided. From day one, the controls for volume, answer a call for not working. Never mind. My first goal was to listen to music. Two days later, more sound in the left ear. You have to play at the connection to try to have the sound on both headphones and then not move. If not, bye bye the sound. In summary, unless you want to improve his yoga, flee this technological gem from an Asian country that I will name the point. It is better to invest in the more expensive and functional material in this dung!