Sharper Image : Dynaflex Powerball with Powerdock Gyro Starter : Therapeutic Health & Fitness Equipment

Powerball strengthens and improves coordination of fingers, hands, wrists, arms and shoulders.
Great for sports (it is endorsed by the PGA) as well as for prevention and treatment of ailments such as carpal tunnel syndrome.
Includes Powerdock™ that automatically activates the gyroscopic Powerball™ with the push of a button.
Blue LED lights glow as speed builds to 13,000 rpm and resistance grows to 35 lbs. of gyroscopic force.
Runs on 2 AAA batteries (purchase separately).

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Dynaflex Powerball with Powerdock Gyro Auto-Starter