Gyro Ball Wrist Exerciser Auto Start Power Forearm Strengthener Gyroscopic Fit Light Trainer for Arm and Fingers

The wrist power ball is the fastest artificial power device in the world. It is mechanical, does not need batteries and any power supply, and has no electromagnetic radiation. The rotation of the wrist drives the core to rotate at a high speed, thereby generating a powerful force. Through artificial control, the rotation of the core can be adjusted arbitrarily. Rhythm and speed, the faster the speed, the greater the power, which can be equivalent to 50 different strength dumbbells, At 8000 rpm there is about 14kg of power and at 1000 rpm there is about 22kg of power. The world record has exceeded 20,000 rpm. Main materials: polycarbonate, zinc alloy Shell: transparent Please follow the instructions in the manual. Prohibit the use of any part of the body Stop the high-speed sphere, It is recommended to use clothing or let the sphere stop naturally.