Fluttering Butterfly. If left alone for over 2 hours, the electric cat toy auto shuts off and needs to be re-started by pressing the switch button. Stop cats getting bored. The butterfly flutters, then drives the main body to sway, which causes the balls to roll around.
eBay
It is very good condition. The only issue is the left ear flapping is sticky so does not move much (see video.). This little guy is really rare find.
eBay