The Carson MM-24 MicroBrite Portable Monocular Microscope is an extremely light, portable 20-40x magnification microscope.  Its built-in LED light provides bright, clean-colored illumination for viewing.  It is so small and light that it fits easily in your pocket to bring with you anywhere.  Images are rendered inverted, because it does not have any prisms in the optical path (this is common to high-magnification devices).  You can place it directly upon the surface of something to observe, or use the base stand for specimens upon slide mounts.