you re bidding on a used but tested Apple Magic Mouse A1296. I used this mouse the entire time I was posting this listing just to test out the clicks and scrolling features. there was no issue. my Mac saw the mouse right away and I was able to pair/connect with it. I also tested it by turning it on and off and it reconnected quickly with no issues. it's rather clean and the only issue a saw with it was some slight wear marks on the side (see picture for details) this does take 2 AA batteries which are not included.