Features: 1Stable Oscillation: This perpetual motion machine sits on a stable table and will happily oscillate when powered on or when the battery is not depleted, until the energy supply stops. 2Classic Tabletop Ornament: This is a classic tabletop accessory that's simple, stylish, fun, beautiful and elegant, it's art in motion. 3Stress Relief: Use this cool perpetual motion desk toy for occasional stress relief and relaxation when you keep it on your home desk. 4Provides Fun: This classic tabletop toy offers you a lot of fun and is a fun device that not only demonstrates pendulum motion but also helps to show the laws of momentum and conservation of energy. 5Widely Applicable: This perpetual motion ornament is suitable for various places, and can be used as ornaments in homes, office desks, shopping malls, entertainment places and other places. Package included: 1 x Ornament 2 x Bracket 1 x Base 1 x USB Cable