This listing is for one mini light up keychain/dog tag. This is rechargeable and features multiple color modes, as well as comes with a charging cord and lobster claw keychain. You can use these as a dog tag, keychain, purse charm, zipper pull, etc! If using on your dog, use it for temporary use when you are going on a night walk or letting them out in the backyard in the dark. They are not waterproof so keep that in mind.