Animated Rusty Chainsaw with Sound FX makes a scary interactive decoration and is sure to scare when you use it as a costume accessory. Lightweight.. Push button activated. The rusty looking chainsaw makes a loud chainsaw sound and the realistic plastic blade spins. Uses 3 AA batteries. Animated Rusty Chainsaw with Sound FX measures 22.05"L x 5.71"W x 6.5"H.