Wing Beat Power Flappers by SilloSock Decoys are game changers! Imagine flapping wings scattered all over your rig on no wind/light wind days. Then imagine them going on and off intermittently! The birds have never seen this before.The Wingbeat Power Flappers come with a 3 stage switch: on, off or intermittent. Power Flappers are a great way to add realistic movement to any decoy spread.Lightweight, portable, and cost effective. They come with a 15 foot wire to connect to any 12 volt battery.