Hand Speed Pro-Exercise fingers & train hand speed

Hand Speed, exercise your finger flexibility, and can also train your fingers at the speed.
Hes a simulated treadmill design. You just need to run your fingers on the treadmill so that you can jog and change the speed of your finger treadmill based on the speed at which your fingers move.
Come and have a try! Practice your hand speed, can also exercise the fingers, more conducive to healthy fingers!