It have been more than a year I am using these headphones. Actually I was unawares about this brand before. I received it for free in a promotional offer when I bought my dell tablet. Till now I have experienced no problem. Battery backup is very good. It takes only 3 hours to get completely charged and runs for 300 hours.
The connection is very quick. It is having led connection indicator. It shows red while turning off, blue and red when on but not connected and blue in connected state. It starts to beep when its battery is exhausted.
Its very stylish and easy to use gadget. It comes in a black leather box with one year warranty card. If you are a music lover you should definitely go for this. I am completely satisfied with this product and recommend everyone to use it.