PB-388H :
Its outer shell and inner rotor are made from metallic materials. Its golden
sheen hints nobility and elegance.
The overall design enhances the quality and weight of the sphere. Each
ball weighs approximately 0.33 kg.
The weight thus increases rotation force, and can tone a user’s arms and
wrists.
PB-388H' is an golden ball with most high speed inner rotor in it.it's the fastest gyroscope of the world.
Its revolutions can be reached over 18,000 pre minute.