This is the UNIVERSAL WAIST LEVEL VIEWFINDER from Reflx Lab. I purchased it through personal import from Shenzhen. It functions as a waist-level viewfinder simply by attaching it to the hot shoe of the camera I usually use. The viewfinder is equivalent to 50mm. It has a level, so you can measure horizontal alignment as well as use it as a viewfinder. Please refrain from purchasing if you are overly concerned about details. I am not considering any price reductions, so I would appreciate your understanding.