This is the "ULANZI 1.55X Anamorphic Lens 17mm". I purchased it on Mercari and used it three times. I no longer use it because I bought a 1.33x lens. The exterior is undamaged, but please understand that it is a used item. Two smartphone adapters are included. It allows you to create cinematic video expressions with your smartphone. You will need a video editing app like "FiLMiC Pro" for iPhone/iPad/Apple Watch to edit. Please consider purchasing.