A.) They are talking about capturing the signals that already pass through your body, and turning that into usable energy. Even if you don't use their armband, you still have these signals going through your body.

Your body definitely magnifies radio waves too. That part is true. If you're ever looking for your car in a parking lot and you're too far away for your fob to work, put it up to your temple and press the button again. You'll hear your car. The water in your head magnifies the radio signal.

B.) Chinese researcher? Scam... This is a scam. This company is going to hit the Chinese stock market and dupe global investors out of billions of dollars. The product will not work, but they will still manufacturer millions of them. Then the company will use investor money to purchase their own product in order to say that it's selling like crazy. These sales figures will drive even more idiots to buy this stock, and they will scam billions more. The end result is a stock that's going to 0, a few guys at the top who skate away with millions, and an ecological disaster where there's a mountain of 500 million discarded scam devices, still in their original packaging rotting away somewhere in a field in china.