> Its heart rate monitor is about as accurate as a chest strap. I'm surprised to hear that. I've found the apple watch to have very significant errors for meas

> Its heart rate monitor is about as accurate as a chest strap. I'm surprised to hear that. I've found the apple watch to have very significant errors for measuring heart rates, often over 20% versus a chest strap. For my purposes that makes it largely useless. I'm admittedly serious about tracking my exertion levels: I run about 40+ miles per week, use a Polar Ft7 for comparison.