This is a pretty sweet mod for the iPhone 4.
This guy turned his iPhone 4 into a microscope by only spending $5 on a tiny SE Mini 45X field microscope on Amazon.com. He attached it to an iPhone case to make it ultra-portable for quick examinations on the go.
With the super-clear retinal display and built-in camera, you can view and take pictures of all the close up discoveries around you...
Check out the How-To video below.