Tested and works great battery compartment is very clean you will need to add four AA batteries The Vnt Gemmy Frankenstein Monster Mash Hip Swinging Halloween Flashing Eyes is a vintage Halloween collectible from 1998 manufactured by Gemmy. This animated Halloween decoration features a Frankenstein monster with flashing eyes, perfect for adding a spooky atmosphere to your Halloween festivities. Made with mixed materials in China, this multicolor collectible is a fun addition to any Halloween decor collection.