As featured on OpenSea:

Whatever he is, this Alien Emoji LED pin is more than just gray. Special PCB board layered with .999 silver construction. Constructed of printed circuit board silkscreened with nano-led ink. No battery is required. Blinkee NFTs now use ether energy to illuminate! Won’t fall off or damage your clothing. Blinkee NFT pins use a bio-magnetic clasp and are tuned to the body of the wearer.