Lighted POWERBALL GYRO (Amber) Includes a FREE Training video CD! The High-Tech Powerball (Amber) made the cover of Time magazine as one of their top 10 digital devices of the year. It features a balance rotor and removable top cap, which allow insertion of the optional digital speed meter. The Powerball generates 35lbs of torque with speeds up to 13,000 RPM. The ultimate in engineering design, featuring the same user friendly features as the DynaFlex Pro Plus but incorporating an on board generator and balanced rotor. By activating the gyro, a dynamism (motion) is created, which will activate LED lights in Amber which are located in the interior of the gyro. The faster the unit runs, the brighter the lights will be until the whole hand is engulfed in a bright glow. Just when you think you've seen it all, along comes the ultimate hand, wrist and arm exerciser. Note: Speed and torque are approximate. DynaFlex does not claim to cure and/or prevent any type of musculoskeletal injuries.