I bought this last year to do some load development on some hunting rifles and I fell on the icy stairs in January and broke three bones in my back so I thought I'd let somebody else use this since I'm not getting out. I just put a new battery in it and I put an extra spare battery in it and the nickel that I used to open the back with I turned it on to make sure it works. Shown in one of the pictures. Basically it's an open box it was never used. Guarantee unit operates as new. No returns.