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Just wrist
Sorry, there was a problem. Please try again later.This device has a built-in optical heart rate sensor that would allow you tor track your heart rate.
Sorry, there was a problem. Please try again later.The band will broadcast your heart rate via ANT+. It does not use Bluetooth or BTLE.
Sorry, there was a problem. Please try again later.It's all on the wrist.
Sorry, there was a problem. Please try again later.Where the band rests against the top of your wrist on the backside of the display, there is a heart rate sensor that has 4 green lights. It captures the heart rate and you don't need a chest strap.
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