DFX Sports Powerball Gamer W/ Speed Meter Plus Dock The DFX Sports PowerBall Gamer with Speed Meter and Docking Station helps you build the endurance and quickness you need. It's wonderful way to help prevent repetitive stress injuries and carpal tunnel. Provides a non-impact, highly effective way to help you increase flexibility, quickness, range of motion, finger, and grip strength. Uses resistance force to generate up to 40 pounds of torque. With the PowerBall Gamer you can use a wide variety of natural and fluid range of motions to simulate your everyday range of movements. The advantage of being able to use these natural and fluid motions in your workout is that you are able to target every flexor, extensors, tendons, and muscles from your fingers to your shoulders. Blue LED's light up with the progression of your workout. Speed Meter, Docking Station Starter, and training CD are included.