Jumping rope is one of the best cardio exercises you can do. And now you can jump rope smarter with the TANGRAM SmartRope Rookie Smart Jump Rope. This jump rope connects to your smartphone via Bluetooth to track and monitor your workout. It can give you all the stats you need about your jump count, calories burned, and time spent jumping. Also, this workout gadget will keep you motivated by allowing you to unlock rewards, challenge other users, and do..