It's a hand-wound, clockwork, standard 8mm movie camera, with a fixed Super Comat f 1.9 / 10mm lens.
Film speed is fixed at 16 fps.
The 'feature' of this model, is the innovative 'Sun Dial' exposure system -
(Basically a series of colored targets for you to point the exposure dial at, with each color representing how sunny is was - from yellow (Bright Sun) - through to dark red (Cloudy Dull)).
Clearly an attempt to make exposure settings easy for the amateur photographer.
The colors used in the 'Sun Dial' are repeated in the parallax viewfinder markings - a nice design touch.
The hand crank is a pressed metal piece.
Another 'feature' is hidden away behind the shutter release just below the 319 logo
If you pull the release down, you get normal filming - however if you push it up, the camera will expose a single frame at a time, allowing you to do stop-frame animation