Review: Mio Alpha Strapless HR Watch and ANT+ MioLink
Most of us that have a Garmin or similar, will likely link it to a heart rate strap. These straps are a simple fabric band that you wear around your chest, which transmits your heart rate to your device (normally via ANT+ or Bluetooth). Heart rate straps have a number of disadvantages though: they can feel restrictive, they can slip down, they need washing and they don't last forever - there was a demand for an alternative, and it's arrived in the form of optical heart rate monitoring found in the Mio range. The Mio Alpha and the MioLink measure your heart rate at the wrist, using an optical sensor to monitor your pulse. The sensor is a tiny square on the back of the watch, and either side of it is a small green light that is shone onto your wrist to help the sensor's recording capabilities. The technology does away with the need for a chest strap completely, and provides a neat solution for those that want to monitor their heart rate with ease, and for prolonged pe...