Have used this product at CrossFit for the last 3 years. First, the placement of this wrap is amazing - placing it on my forearm leaves my wrists free for wraps and grips. It doesn't slide or go anywhere and it sits comfortably. Second, the monitor displays colors that correspond to the heart rate zone you're in (red, blue, purple). I would like to adjust these parameters so that the red blinks at a specific frequency. I've actually owned 2 of these since I lost my first one. I have to say that the first one I bought in 2015 seemed a bit more accurate than the ones I bought this year, although they seem to be the same. If the battery is empty, the accuracy drops. I've had a couple of times where I know I'm in the red zone and it shows me a heart rate of 70bpm - if that happens, adjust it on your arm and wipe the sensor. The range from the monitor to your phone is as advertised. So if you're doing a workout where you're somewhere running away from your phone and coming back, it takes about a minute to reconnect. Overall it's good value for money - there are plenty of pricier monitors that are more accurate or don't turn off when you leave your phone, but it's great for CrossFit or gym workouts. I use it with the FITIV heart rate app and it gives me great feedback on my workouts including calories burned, average heart rate and heart rate over time graph.
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