The Ansco 235 has a built in flash, lens cover, viewfinder, and picture counter. It also has a fixed focus f5.6 lens with an on off flash switch and uses standard 35mm film. It comes with a thumb film advance wheel, rewind release button, and a combination rewind fold down lever plus pull up back release for loading or unloading film. All in all it is a point and shoot camera with no add on possible, available, or needed. The camera pictured above uses two AA batteries for the flash unit.