Track your health and fitness with the Sense GPS Smartwatch from Fitbit. It's essential to maintain good health to better achieve your fitness goals, which is why Fitbit incorporates a variety of health tracking options in the Sense smartwatch. Features like an on-wrist EDA scan app to detect electrodermal activity. This tracks your stress and graphs it, letting you track trends and change habits to reduce stress. You also get on-wrist heart rate monitoring with an ECG app to help assess a possible AFib condition, SpO2, a skin temperature sensor, and sleep tracking.