Compared other mini keychain light, this Utility mini led keychain flash light shines for your nearby lighting, 100,000 hour lifespan, high quality. 20-100PC Keychian Flashlight. 395nm wave length. Black UV Pen Light is Perfect for Revealing Dry Dog, Cat and Rodent Stains and unfavourable Spots that Couldn't See With the Naked Eye.
eBay