well like a lot of the other folk who have post , this be a really great service . I be surprised there be not more product on the market like this . the manufacturing and design of the headphone however be severely lack . after only have this product for 5 month , the back of the headphone have crack . I just get off the phone with the customer service folk and as long as you have the receipt they be refund money and not replace they at all . I think there be too many fundamental flaw with the design .