XCSOURCE&reg; 2X Detachable Telephoto Camera Lens Kit For iPhone 5 5s 4 4S 4G 3GS iPod i9100 i9300 i9500 Silver DC113 Magnification: Telephoto 2.0x Easy install and instant on and off for quick changes. Dimensions (Main body): 20.6mm (diameter) x 19.9mm (length) Dimensions (magnetic ring): 13.06 (outer), 9.38 (innner) made by xcsource.