1. [Smart Counter] The chip has been newly upgraded, with four modes for accurate counting, calories, kilometers, miles and laps.2. 【Non-slip Handle】Lightweight and firm ergonomic non-slip grip. Including long rope + cordless ball. Inside with cordless skipping options, real sweating and weight loss. MBF Training, Crossfit, Boxing, MMA, Fitness and Workout Compatible3. 【360° Tangle-Free Jump Rope Design】360° smooth jump rope experience, fast and tangle-free rotation, no twisting or tangling. High-intensity indoor fitness and cardio jump rope with easy swing. This jump rope is suitable for women's fitness. A stylish gift for your loved ones.4. 【Easy Adjustment】No need to cut, the rope can be easily adjusted in seconds. Suitable for most ages (adults, women, men, children/kids/girls)5. [65mm large ball] 65mm large gravity ball, precise negative weight ratio, simulating the weight ratio of a long rope, quieter, close to the feeling of rope skipping.