【Innovative Design】: This Chaotic Pendulum Perpetual Motion Machine offers a mesmerizing display of continuous motion, creativity in your space 【How It Works】: Powered by batteries (not included), the aluminum sticks revolve in a mysterious, perpetual motion, creating an entertaining hypnotic effect 【Great Craftsmanship】: Made from pp and stainless steel, this Model combines functionality with stunning visual to captivate those who appreciate fine art 【Never-Ending】: Continuously rotating, The constant, fluid motion is designed to appear like the sculpture is changing speeds and directions while continuously rotating 【Quiet】: A beautiful piece of art, nearly silent and is well recommended for quiet office and medical environments. A small "tick" sound may be heard at a very low volume