Apexel MS3L 40/80/120X Microscope for iPhone
0
This is the Apexel MS3L: an iPhone compatible microscope with 3 magnification levels that you can use to observe circuits, nature, and everything in between. It features 10 multi-coated glass lenses and fits most smartphones on the market. It also works with most cases. It has 3 magnification levels for you to choose from, including 40/80/120X. It just clips onto your phone and works without a special app.

When observing tiny objects, you are going to need a decent light source. This one comes with 16 LEDs and 8 UV lights for different scenarios. You get 3200K and 5800K color temperatures, so you can observe gems, electronics, stamps, and everything else. MS3L also has a CPL function to reduce glare and reflections. The battery life lasts up to 5 hours.
[where to get it]