Case of: 48Colors: white, red, silverMaterials: metal, plasticNever lose keys again with this 2-function Sonic Key Finder Key Chain with Flashing Light. Just whistle and the key finder responds to your whistle with a bright red flashing light and distinctive 8 beep sequence to help you find your keys. Light also helps to locate a lock and keyhole in the dark. Includes installed batteries and two replacement button cell batteries. Comes packaged in a blister pack.