Sinotech 60x-100x Zoom Magnifier Microscope Camera Lens LED Light for Apple Iphone 4 and Iphone 4s Mg10081-1ip magnification: 60x - 100x portable and convenient design,easy to carry with your mobile phone. Great prouduct for the watch making industry,especially for inspecting the tiny objects Power Supply:3 x LR1130 batteries(included).