Product was just as advertised. Delivery was shockingly fast! 2 days! the only drawbacks were the manual was very tiny print & I had a hard time removing the strap to charge it for the first time.(Had to use pliers) At first it wasn't clear how to charge it, but I plugged it in to the USB port of my iPhone plug & it worked fine. You do have to be careful to plug it in the right direction. I had to download an app on my iPhone.