Mio Alpha I is a continuous heart rate monitoring watch.
Comfortable band material allows for extended and 24hr heart monitoring. The Alpha I features MIO’s patented LED technology for sensing your heart rate by reflecting certain wavelengths of light off of the blood flowing through your skin. Our test crew reports that Alpha I takes about 2 hours to charge and will run for more than 24-30 hours of continuous heart rate monitoring.
Fits wrists 5.7 inch-7.8 inch.