Jumping Rope is a fun exercise that tones your calves thighs butt arms and more while burning massive amounts of calories! This high-quality jump rope features soft neoprene grips a highly durable cord that is adjustable up to 9 1/2 feet and an easy-to-use computer built-in to the handle. Simply enter your weight and your desired workout time. The computer will count your jumps calculate calorie burn and even sound an alarm when your workout is complete. A great way to keep tone and lose weight!. Battery Included.