It doesn't really state which model it is but right now I'm thinking its the M6.
http://www.newegg.com/Product/Product.aspx?Item=N82E16855625003
I just bought it today, waiting for it to ship and I was also wondering what should I do with it when I get it? I've been browsing the forums here hearing things about no FM and volume issues concerning firmware and English setting turning into Chinese. So I'm just getting confused and was hoping someone could clear the air for me. :D