... , tennis, squash, cricket, badminton, baseball, bowling, basket-ball,, motocross, mountain climbing.2. Increases strength in fingers, wrists, hands, forearms, biceps, triceps, ligament ... location limits. It can be used at any time and in any place while chatting, watching TV, going outing and mountain ... , not iron. It is not easy to be broken Wrist Ball with massage and lights- WB286L