How to Start it

1. Toggle the ball along the double direction arrow to the max resistance,then release it,fast enough to have the ball.

2.Turn your plam facing down, and slowly start to rotate, you will feel that it is scratching against the inside of the wrist ball.

3.Keep rotating with wrist then the ball will spin faster, develop a higher pitch sound. Once you feel it spinning fast enough, stop your rotate, you could feel it oscillating right in your palm.