The Yashica Electro 35 GSN is a simple 35 mm viewfinder camera. It is aperture priority only. with three shutter speed settings. The camera is mechanical; the battery only charges the light meter, so the camera still takes pictures without the battery. The light meter is simple indicating "SLOW" or "OVER" (exposed). This is a heavy and large camera for it's functions, but it's very easy to use and very durable.