PB-388HC :
Any PB-388H can be inbuilt with a digital counter and upgraded to PB-388HC. The counting limit is up to 22,000 RPM.
The digital counter is built on the bottom of the sphere. It displays “real time” revolutions and scores.
It enables users to know their performance, and to compete with other players.
PB-388HC is extremely versatile, and can be used for exercise, training, competition and entertainment.