Hold a soft ball in the left and right hands, and press the left and right balls in accordance with the dynamic pattern and music rhythm on the App! Combining palm movement and music rhythm, it is a fun game machine + App suitable for all ages, hands and brain! Children use it to increase tactile sensory integration stimulation; school-age children use it to combine the auditory, nervous system, muscular system and ideas to strengthen communication and coordination among various systems; adult