A technical definition

NSD Powerball is a finely engineered and precision crafted gyroscope consisting of a rapidly spinning rotor enclosed in a solid, hand held, outer sphere.

How do you start it

You set this rotor in motion using a cord or your finger and build its speed by subtle rotation of the wrist. It contains no motor or no batteries. All of the energy which we describe below comes from you, dear reader, and the stronger you are, the faster you will be able to make your NSD Powerball spin!

And the faster you spin the inner rotor the more inertia it generates and the more resistance it subsequently creates upon the fingers, hands, wrists, arms and shoulders. Do you think you've got what it takes to break the current world NSD Powerball spin record?

All sounds basic enough I hear you say

In theory, it's quite a basic principle (the principle of precession - those magical forces emitted by a fast spinning flywheel) but in practice, it's an entirely different matter and one which has been responsible for the worldwide explosion in demand for hand gyro products - millions have been sold during the past 24 months alone.

These unique instruments generate massive force and put the shoulders, arms and wrists of the user under big pressure - making them ideal for fitness enthusiasts and virtually every kind of sport imaginable.

As the rotor rotates, it generates a force of inertia, controlled by the user And in addition, because the inertia (or gyroscope resistance) generated within the NSD Powerball is directly proportional to the speed at which you are spinning the rotor - these precision instruments are just as capable of gently rehabilitating a damaged limb (wrist breakage, carpal tunnel syndrome, RSI, tendonitis, tennis elbow, golf elbow etc.) as they are at building huge muscle in the arms and shoulders - its a completely non impact form of exercise and is all about rotor speed.