I love my Harley Davidson keychain light clip. It is small and does not take up much room. It clips on and off easily and has a very bright flash light. I am always using the light (because I have 14 dozen flashlights at home with dead batteries and yes i have the shake up kind with no batteries and it is not anywhere near as bright as the little keychain light.)The battery is included in the pkg. with it and is apparently long lasting. I have my car keys on one small keyring and my house keys on another one and both clipped to the Harley clip. I can unclip my car keys easily and quickly every morning in the winter and start my car then still lock up my house then just snap them back together. I gave everyone I thought would use it, one for Christmas. Very Handy!I don't have a Harley but I don't care I like my light clip anyways.