Nikon FM 35mm SLR Vintage Camera + Extras, Sigma, Sunpak And More.  As is, purchased at estate sale, thought it would be a cool collectors piece, that someone may appreciate.  What you see in the pics is what you get.  I am not sure how to test or use this.  If you want to explain to me how to that's cool, but it looks like this probably uses a special watch type battery that I do not have.  As is, but everything appears to be in good shape, but like I said, I don't know anything about this other than it's an old camera.

Thanks for looking.