This is a Holga 135bc.
It shoots 35mm film and creates a vignetting feature. This is due to the lens. The lens is made in a way to create a tunneling affect so that more light hits the center and not the edges. I really enjoy the vignetting feature because it gives photos a bit of a more vintage feel. Another fun feature of this camera is the fact that you can double expose your film. The photo below is a photo that I accidentally double exposed by simply not advancing the film. This was an accident but I love the way the photo turned out.
Below find some photos taken with my Holga 135BC.