its an extended battery with cover...I wasnt gonna post anything untill I had used it but now that I have I can say that I am very happy with it. Nothing was more frustrating than going out all night and having the phone die on me at 5am when it was time to go home
The extended battery and cover is a bit "hunchback" but after making several 10 minute phone calls yesterday and purposely not charging it overnight I still have 65% of the battery life left.
I am in no way affiliated with this product or the seller...just thought id share the love around