... rope to use, you can know how many calorie you burnt when jumping, how long you have jumped.A multi-fucntion ... : Count, timer, count alarm, timer alarm, clock, calorie, fat How do you know whether your exercise is healthy or not? Choose ... very helpful for you.Considerate of Jump Rope JPR-2103 in KYTO please. It was designed by KYTO, with PATENT ... .4$3.1$3.02$3Pictures for your reference in below: