Mechanics principle for flashing rotate-power massage ball
Teen-agers, it can promote left and right brain growing balanced and improve their intelligence, make hands more flexible and thinking more quickly
Old-agers it can improve gastroenteric functions and help sleep, enhance the matching ability of brain and hands, and postpone senility of brain
It's helpful to exercise our finger, wrist, arm strength and toughness
It is a high-quality products which integrated set of sports, entertainment, fitness

Technical Details

Width : 0.75 cm
Height : 0.75 cm

Product Details

ASIN : B073F1VKG5