Gyro Grip, Spinning Portable Centrifugal Force Device for Upper-body Exercise with Electronic Display The Gyro Grip is a portable exercise device that creates resistance through centrifugal force - building great muscle tone. The high-speed, repetitive movements of Gyro Grip exercises increase the user's heart rate for a fast, highly effective cardiovascular workout. The electronic display tracks RPM, time, and Total Revolutions. A double audio tone signals the user at the end of the exercise. A Progress Audio Tone signaling the user of their exercise progress can also be set. The Gyro Grip promotes strength, endurance, and increased calorie burn rate. Held in front of the body, the user spins a 1 LB weight at 200-350 RPM, creating an awesome resistance through centrifugal force - just spin and burn fat away. Spinning the Gyro Grip engages different muscle groups for a satisfying and complete workout.