“So, is the heart rate monitor a wrist or chest thing? You DO have to buy the heartrate monitor separately, correct? It isn't BUILT into the watch? I can't figure out if it is a wrist band or a chest thing. Is it uncomfortable to wear on the chest?”
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The A300 requires a chest strap for it to record heart rate data. Best Buy offers 2 versions of the A300, one sold with that chest sensor and another without. As for how it feels while wearing it, the strap itself is a soft fabric that contours to the body, making it comfortable to wear while exercising with the product - Mike@PolarUSA
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