Use EKOOS self-starting Power Wrist ball, As the speed of the gyro increases, the centrifugal force also increases, and the reaction force on the wrist increases,we can enjoy muscle training freely in anytime, anywhere.

Come with a Carrying box for a good protection for the ball

✅Updated Material:
Steel axis, not easy to deform and break，Wrist ball high-speed rotation of the kinetic energy will bring you a new shock.

✅How to start your new Powerball.

Starting this Powerball is very simple.

Step1: Rotating core facing up and then use both of you thumbs to
turn the rotator again and again, up to the corresponding elastic core position along with the arrow direction.
Step2: Hold the Powerball tightly and then release yours thumbs off the rotator immediately, the rotator will be running at a low speed. At the same time, turn your palm down slowly rotating your wrist to get the power a higher speed.
Step3: When you turn the core speed up gradually , you will feel the same synchronous growing reacting power on your wrist and your arm with the rotating gyroscope.
Check the video
https://www.youtube.com/watch?v=xOe7iA26DQE

Benefits of power ball wrist exercises:
Goodforgolf, tennis, cycling, basketbal, bowling
Good for musicians, guitarists, pianists, drummers, pianists.
This Arm Exercise Ball can help to prevent tendonitis and improve grip strength,relieve pain from sports.

Note:
DO not drop the ball on hard surface at any time,the heavy rotor will damage.
Not suitable for children under 10 years old whose hand strength insufficient to use the product .
Do not add any oil or moothy liquid into it which may cause it inoperation.

【Package of Wrist Exercise Ball】
1x power wrist ball
1x power wrist ball bag
1x User Manual