Description: Kids Jump Training Equipment: Child/Adolescent height boosting artifact, help exercise high jump and promote height growth. Vertical Jump Tester: Multi modes electronic watch to help children set goals and stimulate the desire to challenge. Jump Training Measurement Tool: Upgraded spring count, sensitive transmission, and more accurate counting. Wall Mounted: Nano glue, paste more firmly, does not hurt the wall, can be used repeatedly; Suitable for a variety of walls, suitable for smooth surfaces such as wooden doors, glass doors, putty walls, tile walls, etc. Durable & Easy to Use: Lightweight material, light and durable, firm and not falling off. powered by AA battery, the battery is not included. Specification: Material: Iron+Others Battery: AA Battery(not include) Counting Range: 0-99999 Size Chart: Cord Length(Approx.): 75cm/29.53inch Backboard: 14x10cm/5.51x3.94inch Timer Width: 8.5x8cm/3.35x3.15inch Package Includes: 1x Backboard 1x Timer (with Height Sticker or not, as you choose) Note: 1. This is not infant toy , please take away from kids to avoid eating. 2. Please allow slightly error due to manual measurement. 3. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 4. Wish you a wonderful online shopping!