The Pari-Fex is a cheap plastic camera made in Lyon, France by Fex / Indo. It makes 4 x 4 cm images on 127 film. Versions with a flat front or with an extended lens barrel are known.
The Pari-Fex is not a Diana copy (the Diana uses 120 film); but the lens-barrel version has a similar design.
The Pari-Fex has an eye-level viewfinder. At least some models of the camera could accept a flash. It exists in several name variants.