Brand: Heart Zones, Inc
The Heart Zones Blink Armband is the first 3-in-1 wearable device. Save money by getting one sensor with heart rate. This workout tool can measure heart rate, calories burned, zones, threshold, and more. It has an extended wireless range of up to 100 feet. The Blink model has 2 optical sensor lights-green for pale skin color and yellow for darker skin color for enhanced accuracy-the only one of it's kind. Can be used on all iDevices, smartphones, tablets, fitness equipment, and smart watches that support Bluetooth and ANT+ signals.