Apple already explained the way its heart rate sensor is supposed ... has compared the Apple Watch and the Mio Alpha, a very accurate chest strap monitor, and has extracted the readings from ...

As with the original ALPHA sport watch, Mio ALPHA 2 transmits EKG-accurate heart rate data from your wrist without a chest strap and sends it to popular fitness apps, such as Endomondo ...

If you're in the market for a new heart rate monitor and are sick of wearing a chest strap, the MIO Link is a reasonably priced wristband that will meet your needs rather precisely, and that's all ...