Using COB LEDs vs. traditional LEDs means much brighter light, better energy efficiency, and a longer life. The COB LED keychain light produces an amazing 30 lumens despite its compact size. The included carabiner clip is great for your keys but also can be used to attach to a backpack or clothing for excellent night visibility. Powered by 2 CR2032 button cell batteries (included and installed). It even includes a built-in rear-mounted magnet for mounting to most metal surfaces. It's available in four vibrant colors, and the COB LED produces bright, even white light.
