Newtons Cradle Dynamic Balancing Instrument Physics Science Fun Desk Ornament Educational Teaching Science Toys

This is a special perpetual motion toy because it has no switch, just start and stop it with your hand, on/off switch is not necessary.
The desk toy requires 4 AA batteries (not included), which can make sure it swings for a long time and you do not need to replace the batteries frequently.
It’s a neat focal point to destress after a busy day of working. When you get bored and feel there is too much pressure, you can put it on your desktop, start it, quietly watching its fascinating swings, it will be fascinating to you. It can kill time and help you relieve stress.
It’s a classic desk accessory is art-in-motion. This cool desk toy will be a good icebreaker when you lay it in your office desk or your home desk.