【Scientific Exploration】This perpetual motion machine art piece encourages children to explore scientific mysteries, sparking their interest in physics through an engaging mechanical experience 【Newtonian Physics Demonstration】The Newton's Cradle-inspired design showcases pendulum ...【Scientific Exploration】This perpetual motion machine art piece encourages children to explore scientific mysteries, sparking their interest in physics through an engaging mechanical experience 【Newtonian Physics Demonstration】The Newton's Cradle-inspired design showcases pendulum motion, momentum, and energy conservation laws, with continuous ball movement lasting 8-15 seconds 【Unique Desk Decor】Crafted from durable plastic, this kinetic sculpture serves as an eye-catching desk ornament, surprising friends while offering an enjoyable scientific demonstration 【Stress Relief】Perfect for adults seeking stress relief, this mesmerizing device helps alleviate work fatigue, making it ideal for office decor and as a teaching aid for explaining physical principles 【Ideal Gift】An excellent choice for birthdays, holidays, and special occasions, this perpetual motion machine combines aesthetics with educational value Specifications: Dimensions: 15 x 10 x 15 cm Material: PVC and steel Battery: Built-in 1800mAh Drive Mechanism: Electric motor Operating Time: 2.5-3 hours continuous use on full charge On/Off Control: Touch-sensitive circular surface Auto-Off Feature: Automatically shuts off after 60 seconds without ball detection