This is no doubt a pricey heart rate strap, but it's accuracy, stability and quality construction, could save your life! I have had Garmin heart rate straps over the years and have always had issues, over time, after changing the batteries a couple of times. This one, however is USB rechargeable and that also saves the landfill issue with battery disposal. It paired almost instantly with my new Forerunner watch and the Connect App, which now shows when this specific strap is detected,by the watch. No guessing which device the watch is linking to. The only criticism I have is that I would prefer waking it up by the button on front only, rather than auto detection. This way you could have the strap on before getting to a exercise location and manually activating it when you get there rather than having to take your shirt off to put it on when you arrive, to save battery life.