Lucky Cats Enamel Keyring

Maneki Neko enamel keyring in 4 colours. 

Black - To see off bad luck.

White - For good luck.

Yellow -  To encourage wealth.

Green - For good health.

The maneki-neko (招き猫, lit. 'beckoning cat') is a common Japanese figurine which is often believed to bring good luck to the owner. - Wikipedia.