【AUTOMATIC START】: Push the gyro ball core in the direction indicated by the arrow. Release your hand when you push until there is a lot of resistance, the torque ball wrist exerciser will automatically start to rotate through the internal spring, while the built-in led light will light up as it rotates
【BUILT-IN LED LIGHT DESIGN】: No battery power required, just turn your wrist and it will light up. With the rotation of the wrist, the led light will adjust the brightness with the speed of the wrist rotation, the faster the light is brighter
【EXERCISE WRIST AND HANDS】: The wrist gyro ball is designed to target the joints, ligaments and muscles of the hands, wrists and forearms, which is good for strengthening the muscles of the fingers, wrists and forearms
【CONVENIENT TO CARRY】: 2.75 x 2.16 inches / 7 x 5.5 cm, the right size, with a convenient and handy bag, you can carry it wherever you go, you can easily workout and relieve stress anytime and anywhere
【WIDE RANGE OF USES】: whether in the office, at home, in the gym or on the go can be used, is the first choice of sports enthusiasts, fitness enthusiasts, want to exercise hand strength, can meet different needs