1. Smart digital counter shows body weight, number of jumps, exercise time, calorie consumption. You can also use the timer to plan your training time. The counter serves as the perfect aid to train more scientifically and to keep motivation high.2. Profile ball bearings & ergonomic handles The high quality built-in ball bearings ensure fast and stable rotation, perfect for double unders. Thanks to the ergonomically shaped and non-slip handles, a secure hold is guaranteed.3. Adjustable & durable The steel cable is 3m long and easy to adjust to required length, therefore suitable for every body size. If the protruding end bothers you while jumping, you can simply cut it off or fasten it with the cable ties provided. The steel cable is protected by a PVC sheath and is suitable for use on hard floors outdoors.4. Cordless Jump / Jump Rope Two Jump Modes - Dual rope configuration allows users to switch between non-jump rope and jump rope. The wireless jump mode is more convenient and you can jump indoors at any time regardless of the outdoor weather.5. Advantage of Jumping Rope Jumping rope is a very effective exercise for burning calories and increasing endurance. 10 minutes of jumping rope burns about as many calories as 30 minutes of jogging. It also strengthens the lower muscles, arms, shoulders, back, and abdomen, and helps increase height.