I used this mouse for over 5 weeks before it needed a recharge. Very nice mouse, very comfortable. I liked it so much that I bought another as a backup. I did have to take it apart one time to clean it, and it was a little tricky to put back together, but I got it. Works like brand new again. I am planning on purchasing another for my niece. The first rechargeable mouse I bought had all of these lights flashing, which I found useless. I had to charge it every other day. Not this one though.