https://www.keychainfavors.com/Fav/?Flashlight-Keychains_785_786_pop.html Custom LED keychain is a kind of decoration powered by 3V button battery, mainly composed of PP environmentally friendly plastic, alloy shell, LED lamp head, 3V button battery, switch button and other original parts. It has beautiful appearance, exquisite and compact and easy to carry, and various luminous colors, including white, red, yellow, purple and other colors.