This is the POLAROID 640. It is one of the simpler Polaroid models from the
"square corner" series, also marketed as "Sun" and "OneStep", no extras, but it has a tripod socket.
models have the 2-part shutter button like the Lightmixer, which
enables you to not fire the flash if you only push the second part of
the button and not the first (red) one. I have a french manual which
Lens: 11/116mm (1-element plastic), 1.2 m closest focus. Size: approx. 9,3x11,3x15cm, Weight: 605gr. Automatic flash with qick charge. Tripod socket.