The Pro Gyro weighs under a pound, but can produce up to 35 lbs. of impact-free resistance, improving your blood circulation and dexterity. Tone and strengthen your grip, wrists, forearms and shoulders in just minutes a day. The Pro is ideal for relieving symptoms associated with RSI, as well as cutting recovery time for sport injuries in half. This combo pack includes a Power Starter, which spins your gyro up to operating speed in just seconds to maximize your workout.