can do batteries,, makes sounds, hours of fun. Sound over headphone is not very loud, there's no amplification. So best to plug it into an amplified scource. No volume control. Build quality is very good. it feels sturdy when you insert the batteris into it on the bottom. What can you do with it? turn the knobs, which feel good, patch the patches and wait what comes out. I love it. a A funny little monster with a will of it's own. Certainly worth the price paid.