Description
Fun and addictive, the NSD Powerball Vortex handheld gyroscope ball lets you add new dimension to your exercise routine and reach spin speeds over 15,000rpm. The Vortex generates resistance based on rotor speed to help you tone your arms with no impact.
Features:Reaches speeds of over 15,000rpmResistance of the Powerball is directly proportional to the speed at which you're spinning it Ideal for fitness and rehabilitationDigital speed meter can be added (sold separately)DVD and two strings included