Meet BSXinsight: a smart wearable device that measures how hard your body is working and measures your muscles’ endurance capacity. The 2nd generation BSXinsight now offers real-time monitoring of muscle oxygenation and daily activity tracking. The device comes with a compression sleeve, so it stays on your calf as you exercise. It connects to ANT+ foot pods, heart rate monitors, and power meters.
BSXinsight is compatible with iOS and Android devices. It is lightweight and does not get in your way. Your data is synced to the cloud and can be accessed to all your connected devices. BSXinsight will be available in running, cycling, and multisport editions.[Source]