XAMGTAE bundles its LED glasses with a pack of 20 “finger lights,” which attach to the tips of your fingers with an elastic strap. Each finger light has one LED in it, and can fit both kids ...

Product Features. Battery operated with 3 LED colors and 6 light modes - strobe, alternating, steady, and one color at a time flashing. In colors for boys and girls aged 4 and up.

As for how to identify which LED lights — not to mention phone screens — are prone to flicker, Miller suggests searching the Internet for flicker-related websites, or using your finger or ...