Electronic Perpetual Motion Shake Wiggle Device Swinging Balance Bicycle Physics Science Desk Toy Weather Stripping Complete Light Blocking: Full coverage

Complete Light Blocking: Full coverage design with nose guard ensures total darkness for better sleep anywhere

Great for girls

• Enhanced safety: ensures reliable and responsive braking

detachable 6 and 12 angle

【Ingenious Design】The slim trash can is perfect for narrow space

Electronic Perpetual Motion Shake Wiggle Device Swinging Balance Bicycle Physics Science Desk Toy Weather Stripping Complete Light Blocking: Full coverageFUNNY: Simple and modern style with lots of fun, this roulette perpetual motion instrument is a rotating artwork on your desk, which can relieve your stress EDUCATIONAL: Great for science enthusiasts or demonstrating the laws of physics in science classes Help your kids explore the significant values of physics. FUNCTION: The shaking device requires 4 AA batteries, swing it by hand and it will use the power to keep swinging until the battery runs out