Left hand "magic" exposure setting lever must be held down while pressing the top-mounted shutter release. Programmed auto-exposure prefers fast shutter speeds. Red/green signal for correct exposure is in the viewfinder. The lens Color-Apotar S 39mm f/3.9 and the shutter is special Compur-B with speeds 1/30-1/250.
It is claimed to be the world's first fully automatic 35mm camera. It also sold as Agfamatic in Canada. 
Also see the list of Agfa Optima cameras.