... forwarder Usage: mainly for sports like tennis, golf, basket-ball, table tennis, badminton, bowling, rowing, rock-climbing , ... never been used. It is the highest rated hand-held gyro that makes, in the right hands, ... brighter the lights will be until your whole hand is engulfed in a bright glow. It is ... keep in sync with the spinning of the ball. Roller ball doesn't need batteries, is only slightly ...