The HD LED display on this speed skipping rope has calorie mode, kilometer mode, mile mode, and counting mode, which can be switched at will. This is useful for easier and more scientific monitoring of your exercise plan. During the rope skipping process, it is stable and not floating, wear-resistant and durable without fear of various ground challenges. There are two types of ropes, which can be changed freely, cordless rope ball or ordinary rope, which means you can jump indoors or outdoors, there is a bag that can be easily carried and stored. You can skydive at home, school, park, or travel. It is safe and convenient. This cordless skipping rope is 100 percent friendly to beginners and kids. The length of the rope can be adjusted arbitrarily, without worrying about height, the length of 3 meters can be adjusted arbitrarily. The ball bearing system is installed inside, which can rotate 360 to ensure smooth and fast rotation and prevent tangling or bending, so as to obtain a fast and smooth experience.