Graph HR

Your current heart rate is displayed in the center of the screen. For quick reference, the screen is filled up to your current heart rate relative to your heart rate zones (color-coded). On select devices, up to your past half hour of heart rate data is plotted on the screen. DISCLAIMER: Being pretty comes at a cost - extensive utilization of graphics can affect your battery life. Make sure to determine any effects on battery life before trying to run an ultra-marathon with this data field. Coming soon: Average heart rate for 15-minute splits.