The speed of the device ranges from 2000 rpm to 16000 rpm and at this highest speed it is calculated that 40lbs of resistance is being generated. The basic theory centres around how gyroscopes act on the environment around them. Once a gyroscope has started, then it asserts a centrifugal force and inertia on objects in contact with it. While the Powerball gyroscope is an excellent tool for athletes of all levels, it is also gaining a very healthy reputation for rehabilitation for arm and wrist injuries. Using the theory above, you rotate the powerball with a circular wrist motion in either a clockwise or anticlockwise manner, it's works in both directions. Inside there is a finely engineered and precision crafted gyro with a rotor that spins rapidly once the device has been started either by a rip cord or electronic starter. The Powerball can be used by people from any walk of life and in a sports manner to build strength for certain sports, such as golf, tennis, baseball or any sport that demands powerful grip and strong arms. They have many benefits for the hands, wrists and arms being able to increase muscle strength and definition. Fun!

    Powerball - Home Page
    Includes the current jackpot, recent winning numbers, and where and how to play..Official site from the Multi-State Powerball Lottery Association

    Powerball - Numbers
    .Every attempt is made to ensure that this list of numbers is accurate, the Winning numbers are not official until confirmed by the auditing firm of LWBJ, LLP