Specifications Digital premium microscope for iPhone 4 Magnification: 60X to 100X Power supply: 3x LR1130 button cell batteries (included) Compatibility: Case fits the iPhone 4, iPhone 4S Button: LED light on/off, adjust focus, adjust zoom Dimensions: 85 x 32 x 21 (mm) Package Included 1xMicroscope 1xPouch 1xBack cover for iPhone 4 / 4S 1xCleaning cloth