Halloween Vibrating Hand Decoration Scary Weird Creepy Eerie Decor

Possibly vintage vibrating hand that lights up and plays eerie sounds. A great Halloween decor piece. Batteries NOT included. There is an on/off switch. I'm not sure how the hand goes off. When switching on, it seems to run for about 10 seconds then turns off but will turn on again seemingly at random. Measures approximately 7 inches.