Enkeeo Calorie Counter Jump Rope with 10FT Cord, 2 Balls with Short Strings, Digital LCD Screen, Anti-slip Handle Good for Double Unders Exercise Crossfit WOD Boxing MMA Training Fitness Workout 2 THOUGHTFUL OPTIONS: comes with a 10FT/3M cord for originally jumping exercise or replaces a short rope with slightly weighted ball as a cordless jump rope while just having restricted space available to workout ADJUSTABLE LENGTH ROPE: a rotate head enables you to adjust the desired length of the rope that flows smoothly and doesn't feel weighed, suitable for all different ages height AUTO CALCULATION: this gadget features an advanced and accurate loop counter function, and you dont lose your concentration to count while youre exercising DIGITAL LCD SCREEN: 3 buttons operation to instantly set the clock, timer and weight, the LCD screen clearly displays the calories burned and jumps counted for your record PORTABLE AND COMPACT: easy to stash in your gym bag or backpack and convenient to take anywhere, starts your full-body workouts at your home, office or during traveling