The MM-240 MicroMax Plus™ from Carson Optical will turn your Samsung Galaxy S® 4 into a Digital Microscope! It is a powerful 60-100x power Magnification Pocket Microscope with a Samsung Galaxy S® 4 Adapter. Taking close up images and video is easy using the Samsung Galaxy S® 4. Set up is easy, simply attach the Adapter case and MicroMax LED Pocket Microscope to your Samsung Galaxy S® 4. Open the camera setting in your Samsung Galaxy S® 4 and start viewing. The built-in LED light provides a bright, clear image. You can zoom in using the focus knob on the MicroMax LED or digitally using the zoom function on your Samsung Galaxy S® 4. It is great for viewing circuits, foliage & flowers, fabrics, coins and so much more!