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. LED keychain not only has aesthetic effect, but also can play the role of lighting, so it is often used as a fine craft gift for advertising.

LED keychain has various designs and functions. Some are equipped with sound function, becoming luminous and sounding keychains, and some are designed as portable keychain lights with charging and emergency lighting functions, suitable for outdoor activities. In addition, some LED keychains combine banknote detection fluorescence technology, which can perform UV purple light banknote detection, increasing its usage scenarios and functionality.