[Engaging Fun] --- Height Growth Training: This jump counter features a digital display, instantly counting each successful jump! The vertical jump counter cultivates children's interest in jumping, helps them practice, and promotes height growth. [Backed by Science] --- Research shows that daily touching and jumping exercises not only aid brain development, reduce learning fatigue, minimize mobile phone dependence, and protect eyesight, but also help children grow taller. [Eco-Friendly Materials] --- Made from environmentally friendly ABS material, making it lightweight and durable. The touch sensor design is comfortable to press, sensitive to touch, and reliably counts jumps. (2 AAA batteries included) [Upgraded Washable Adhesive] --- Easy to install, the soft adhesive sticks easily to the wall without damage. It can be repeatedly washed and reused, remaining stable and shake-free. As your child grows, the height device's position can be adjusted at any time. [Variety of Training Modes] --- Voice-activated height touch device with encouraging phrases, fun tech training, cheerful jump encouragement, intelligent counting, calorie tracking, etc., stimulating interest in challenges and exercise. Suitable for ages 2-18.