The primary reason you lift weights for a workout may be to build muscle, but the challenging action of raising heavy gym equipment does have you burning off energy. C-Ring Dumbbells have been designed to help keep track of what your physical expenditure so that you can best monitor all of the work you put in at the fitness center.
Each hi-tech free weight communicates with your smartphone via USB, collecting and recording your activity and storing it as an exercise regime which can be sent to your computer. But while you're working out, Wang Zihao's C-Ring Dumbbells can keep you updated on the number of calories you've burned off. Illuminated rings around the edges of the objects glow increasingly more red as you approach 400 calories.