If you're getting older and the printing on every package seems to be getting smaller, or if you have trouble reading the tiny type on labels, or if you're a collector and you like to see magnified details, the best digital magnifier is the Clarity IV-U Portable 5x - 20x Digital Magnifier, which it calls a "Personal Vision Assistant."
The Personal Vision Assistant is basically a small digital camera in a handheld case that contains an LCD display and a few controls. You can adjust the magnification from 5x to 20x, and freeze the frame on its color screen. It weighs 4 ounces, and fits conveniently in a pocket or purse.
It's rechargeable, and its low battery indicator lets you know when you need to top off the battery. And an auto shutoff feature extends battery life.
The controls and documentation aren't the best, but it does a fine job, and comes in very handy when you're confronted with small print or when you want to magnify the details on a collectible object. And the freeze frame feature lets you hold onto a copy of the magnified image.