1、Voice Announcement: It built in voice announcement, attract attention to improve concentration, and voice counting encouragement, a sense of interaction, to motivate children to persist in training. 2、Interest Guidance: Children are often sedentary, hunchbacked, lack of bouncing, this product is a good toy to develop children's hand eye coordination and make them love sports. 3、Science Professional: High interest to grow taller, scientists have shown that appropriate jumping helps to grow taller, and each jump will get stretched. Children's daily touch and bounce training also help brain development, reduce learning fatigue, reduce dependence on cell phones. 4、Eco Friendly and Durable: Made of environmentally friendly ABS material, lighter and more durable. Touch sensitive design, comfortable to press, sensitive to touch, sensitive to count, sturdy and durable. 5、Easy to Use: Easy to install, a sticker can be installed anywhere, stable and non swaying. As the child grows taller, the installation can be adjusted according to the child's jumping height. Item Type: Touch High Jump Counter Material: ABS Size: Approx.9.5 x 9.5 x 3.5cm / 3.7 x 3.7 x 1.4in Battery Type: 2pcs AAA batteries with 1.5v (shipped without batteries) Suitable for the Crowd: 4 to 6 years old 1 x Touch High Jump Counter 2 x Nano Paste