Review on IJOY Bluetooth Wireless Sport Earbuds - IPX4 Sweatproof Headphones with Microphone, Noise Cancelling Earphones & Headset for Workout, Running, Gym by Caroline Saunders

As soon as I got the headphones in front and opened them up and charged (I've been told that charging before use will extend battery life, so yes). Then BIG PROBLEM. As soon as I plug the USB into an outlet, I smell burnt rubber. Without knowing where he came from. I keep trying to connect it to Bluetooth (struggling to get the new port to match) and I'm burning the USB. I touch the main cable to check because I was so confused by what just happened and burned myself again. By now, the smell of burnt rubber filled my room, and the hard plastic parts on the inserts themselves were also getting hot. So I unplug and throw the wire in the trash immediately after it's cool enough to touch. As for the Bluetooth itself, nothing burns or smells yet, so after charging I'll check the product myself. Just had to educate others about the USB, if you get it just throw it away so you don't burn yourself.