It comes with two attachment frames (one is in plastic bag), a pouch
and a small micro fiber cloth and a viewer strap, no diopter adjustment.
But this finder body has a relatively long thread, on which you can move
the lens and eye cup assembly back and forth to adjust to your eye sight.
That square thing has glue-backing metal to attach to the LCD screen, and
the finder body has four magnets for each side to this square metal frame.
I use it for my NEX5 > http://www.pbase.com/kkawakami/image/133739722