Kyung Guk Lee has a knack for unique designs and the e-rope is nothing short of it. This jump rope concept recharges AA batteries and indicated the battery life through LED lights found on the side of the device. All while you put in a healthy workout. In making it a user-friendly gizmo, Lee placed +/- indicators to give owners the heads-up where to batteries. Put in a 20 minute workout and you have a full charge.
Source: Yanko Design
