Apexel 235 Degree Super Fisheye/ Fish Eye Lens with Back Cover Case for iPhone 4/4S Super 235 Degree fish-eye wide and low distortion, high quality technical image effect Portable and detachable, you can take photo with your devices at any time Nano high penetrability, low reflection coating technique The adaptor case is lightweight, durable it also can be used as a protective case, guarding against bumps and scratches