【JUMP ROPE WITH COUNTER】: Built-in high accuracy magnetic control counter which allow you to input your weight for you to track the time and rotations and how much calories you burned. The tiny screen which displays on this crossfit jump rope shows Timer, Weight, Calorie and Circles is useful to monitor your exercising progress. It is also embedded with a sound effect when you reach to the exercise goal you set. 【ADJUSTABLE JUMP ROPE】: the jumping rope for exercise design with 9 feet long of the rope, adjust to a larger length without tools for a taller person. Not only adults but also child can play it,it can also be used as a lovely toy. 【WEIGHTED JUMP ROPE HANDLE】: Built with metal block inside the handles. Unique ergonomically and anti-slip designed handles offer perfect comfort hand feeling and provide firm grip you need. Heavy jump rope system built to help you achieve your weight loss and fitness goals. Perfect weight loss equipment and workout accessories for women and men. 【PERFECT WORKOUT ROPE】: The training rope comes with an extra battery and a screwdriver to open the back when it's ready to be charge,thoughtful and convenient. It’s a easy indoor sport and a perfect workout equipment for everyone, keep you healthy and enjoy your own personal fitness journey at your own pace in the comfort of own home. 【DURABLE QUALITY WITH GUARANTEE】: Steel wire rope is coated with PVC, which features durability, endurability and fluentness, eliminates tangling and coiling and allows you to jump on any surface. LIFETIME GUARANTEE, if you ever have any issue with your exercise rope for any reason, just contact our support team.