The USBfever 60-100X Zoomable Microscope will convert your iPhone 4 into a portable microscope. Now you don't have to got your school lab when you can have your own microscope! This amazing little microscope has a built-in LED light for better image quality. The microscope is applied through a dedicated case on the back of the iPhone 4.
Once installed, you can use the microscope to view objects up to 100 magnifications. It has a LED in the front, a ON/OFF Switch, a Focus Control and a Zoom Control. This device is powered by 3 LR1130 Button Cells (included).