What is a wrist ball? Wrist ball is the abbreviation of wrist fitness ball, also known as power ball, magic ball, gyro ball and super gyro. It was invented by people in Taiwan Province province, popular in Taiwan Province province, and then spread to Europe and America, and gradually spread to all parts of the world. Wrist power ball is the fastest artificial power device in the world. It is purely mechanical, without batteries and any power supply, and without electromagnetic radiation. The rotation of the wrist drives the ball core to rotate at high speed, thus generating powerful power. Through manual control, the rhythm and speed of ball core rotation can be adjusted at will. The faster the speed, the greater the strength, which can be equivalent to 50 kinds of dumbbells with different weights. There is about 14kg force at 8000 rpm, and about 22kg force at 10000 rpm. The world record has exceeded 20,000 revolutions per minute. Because of the powerful power generated by its high-speed rotation, it is very helpful to exercise the strength and toughness of our fingers, wrists and arms. It integrates sports, entertainment and fitness, and is increasingly favored and loved by people all over the world.