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.
Wrist ball can increase the strength of fingers, wrists and arms, exercise the toughness of these parts, promote blood circulation, eliminate fatigue and improve health, which is beneficial to human body. If it is not overused or improper, it will not hurt your wrist.
The top ten brands of wrist ball are Grey Rabbit, MF Sports, MacKay /MAXSOINS, Comax /Kindmax, Jianbit, Qinshulv, Xinyiwanjia, Lang Wei/Runwei, Lang Wei/Runwei, Kusidi/Kusidi.