Review on Dcorn 7'' Digital Microscope with 1200X Magnification, 12MP Camera, and 32GB 🔬 TF Card for Adult Hobbyists: Soldering, Coin Collecting, and More - Windows/Mac Compatible by Jimmy Jefferson

This is a great well built little viewer that works well. You can't see the whole coin unless you put a viewer on top of a book or something to pick it up, and then the coin looks oblong instead of round. But there is a very clear picture. When you receive the viewer for the first time, make sure the power cord is plugged into the right side of the display and into your computer's USB port. If you don't do this, you won't be able to turn it on. Trust me I went insane before I found out. I don't know why it won't turn on with just a fully charged battery, but it doesn't. By the way, the company's technical support is very fast and helpful.