In the past few years, we have covered plenty of smart microscopes and accessories here. The Bodelin ProScope Micro Mobile Kit for iPhone is also worth a look. It converts your smartphone into a 20-80x handheld digital microscope. It has a 12-LED illumination ring with dimmer built-in. It runs for 5 hours on a 340mAh battery.
The Bodelin ProScope Micro comes with an ABS polycarbonate body and removable lens cartridge. It has two rocker switches for adjustments. Costs $149 at this time.