Product Description

NSD Powerball is a finely engineered and precision crafted gyro consisting of a rapidly spinning rotor enclosed in a solid [hand held] outer sphere. 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 inflicts upon the fingers, hands, wrists, arms and shoulders. The regular model has no digital counter nor lights. A counter can be added separately.

Product Details

• Amazon Sales Rank: #8100 in Toys & Games
• Brand: NSD Powerball
• Model: 250 Hz Amber

Features

• Perfect for golfers, musicians, squash, tennis, fencing, basketball, badminton, archery, cricket etc
• Use for rehabilitation and relief from carpal tunnel syndrome and RSI.
• 250Hz Powerballs are the still the fastest models in the range
• The 250Hz Powerball comes without a digital speedmeter/counter, but it can be added later if required
• Not suitable for Children Under 14yrs