A medium-sized, mason-style jar with a string of flickering firefly lights. My young daughter got many hours of pleasure from this battery-operated "fireflies-in-a jar." (Uses 2x AA batteries.) However, the lights no longer work. Before discarding, decided to post in case someone handy would be interested in making the simple repair to get the lights working again. Perhaps another young child could enjoy the "fireflies" again! Thanks. Em