... ,basket ball,motocross,mountain climbing.-Increase strength in fingers, wrists,hands,forearms,biceps,triceps,ligament and shoulders.-Great benefit ... for musicians,guitarists, pianists,drummers.-Rehabilitates sore muscles and joints.COUNTER OPERATION-How to startPress the button ON ... will calculated the accumulated rotor revolutions during a session and record, each 100 rotations as one unit, for ...