Brought this strap in addition to my Titan watch, because I do a lot of boxing & mountain biking. I find the watch doesn’t give a very accurate reading on its own because it slips down your wrist, I thought this would help with more accurate readings. Since buying the heart rate strap, I have found it very easy to use. It pairs to your watch very simply. It is comfortable to wear and easy to adjust. I would definitely recommend this product to anyone with a polar watch because it gives enhanced data.