I brought this product when I purchased my sony phone I though same brand accessory will give me best performance. I used these headphones for next 2 months I will be wrong if I say quality is poor because output sound was very nice with pretty base and clearty but suddenly one day one side of headphones stopped working.i goto service centre they changed headphones and gives me new one but after 6-7 days they also stopped working. it was the wrost experience with these headphones. I can say that simple headphones which are comes with phone are better than this product.