Suction Cups: There are 3 strong suction cups on the back of the height touch device, which can be pasted on any glossy place, and can be installed and adjusted according to the jumping height of the child. Material: Our interesting high counter is made of plastic and electronic components, which are lighter, more convenient and more durable and you can use it for a long time. Stretching: Children get stretched every time they and touch our children jumping touch counter, and proper jumping helps children grow taller as they grow. Attract Attention: Voice broadcast counting encourages children to high, this design will make children like it more, and can also attract children's attention and improve concentration. Appropriate Jumping: High interest can grow taller. Scientific research shows that proper jumping helps to grow taller, our height training touch device helps children . 3 x AAA battery 1.5v (not included)