Feature:
MULTI-PURPOSE: A classic tabletop accessory, this action toy is moving art. Use it to feel the bad weather, relieve stress, call bored classmates or teach young people physics.
Wide range of applications: Beautifully decorated, can be placed in your home, school or office, the size of the vintage furniture is perfect for taking pictures or placing in different places like bedroom, office, etc.
Perfect design: The product adopts electromagnetic drive, which uses force to make the ball move infinitely. Surprise your friends with this clever toy and make them scratch their heads. Everyone will love it.
PERFECT GIFT: This gravity toy is fun and functional. This action toy is also a gift for many events, such as housewarming, birthday gifts, Valentine's Day, Father's Day, etc. We can give it to our friends, children, family.

Specification:
Name: Perpetual motion principle device
Material: plastic + steel ball
Power supply: USB plug-in use
Size: 15*10*15cm/5.9*3.9*5.9in
Color: yellow

Package content:
1* perpetual motion machine
1* USB power cord

Notes:
1. Please allow 1-3 cm (0.4-1.18 inch) difference due to manual measurement and slight color variation with different display settings.
2. Due to light and screen differences, the color of the product may be slightly different from the picture. beg to be excused.