The LensMag from the Carson Optical HookUpz Collection is a 2-pack of high powered magnet magnifiers for the iPhone 5/5S/5C. Included in each 2-pack is a 10x and 15x magnet magnifier. Simply remove the case from your iPhone 5/5S/5C and place the desired high powered magnet magnifier over the camera. The Lens Mag will now act as a macro-lens that will give you added magnification without the image resolution being pixelated at higher magnifications through the use of the built-in camera application on your iPhone 5/5S/5C. The Lens Mag magnetically holds onto your iPhone 5/5S/5C directly. No glue or additional pieces are needed. The LensMag will work on most iPhone 5’s. We have recently found that in many instances if you have a refurbished iPhone 5, where the ear speaker has been replaced, the LensMag will not work. This is due to the replacement ear speaker having weaker magnets with a reversed polarity. Also, in a small percentage of recent iPhone 5’s Apple has being using an alternate ear speaker, most likely due to a component shortage. This alternate speaker also has weaker magnets with reversed polarity. Therefore, the magnets will not stick. We are sorry for the inconvenience and are already working on a fix for these small percentage of situations. If you encounter this issue, please contact us directly and we will send you a replacement that will work with your iPhone 5 as soon as it is available. Please note that the optimal focusing distance differs between the 10x and 15x lenses. For the 10x lens, the optimal focal distance is approximately 0.75 inches from your viewing subject. For the 15x lens, the optimal focal distance is approximately 0.5 inches from your viewing subject.