Working a jump rope can get your heart pumping, helping you warm up and burn calories quick. The SmartRope lets you do all that but has a 23-LED system that shows your number of jumps in mid-air. You can also view your # of jumps, time spent exercising, and calories burned on your smartphone.
This jump rope lasts up to 36 hours on battery. Its right handle has a LED that shows Bluetooth connection and battery status.[where to find it]