Polar OH1SKU: COMO-003112.
The Polar OH1 is a continuous heart rate monitoring arm band. Its comfortable band material allows for continuous activity level monitoring. The OH1 features 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 the Polar OH1 takes about 1.5 hours to charge and will run for more than 12 hours of continuous heart rate monitoring.