It is a very rare RX Freud Stress Coaster by Hyman Products Inc. It makes the sound of broken glass when a drink is placed on the coaster. It is in great working condition and runs on two AA batteries that are not included. It would be wanted by people who collect 1980s memorabilia, old electronics, or old toys. I am not able to find another one anywhere on the web. Please watch the video and look at the pictures to judge the condition for yourself. If you have any questions, please message me.
eBay