Always-on health tracking - Metrics such as resting heart rate, blood oxygen saturation, and skin temperature reveal a lot about your health and fitness, as well as how well you care for your body. Continuous heart rate monitoring - Fat burning, cardio, or peak performance? Track your heart rate zones in real-time to train with the right intensity for your goals. Blood oxygen saturation (SpO2) monitoring - The SpO2 value indicates how well the body is supplied with oxygen. Low values may indicate health issues that you can quickly identify with Fitbit. Skin temperature monitoring - Fluctuations in skin temperature can alert you early to changes inside or outside the body, from an impending fever to a too-warm bedroom or the onset of your period. Mindfulness exercises - Too much stress? With various mindfulness exercises, you can learn to manage stress better and stay calm. Guided breathing exercises - The Relax app is your mindfulness coach on your wrist, guiding you through calming breathing exercises when everything feels overwhelming. Tracking active zone minutes - When you train in your target heart rate zones, you accumulate active zone minutes. In the cardio and peak performance zones, you exert yourself more, so you earn double the minutes - that's double the motivation. 20 workout modes + SmartTrack. The Inspire 3 offers 20 different workout modes and displays statistics like pace and calorie burn in real-time. SmartTrack even automatically records common types of workouts, so you can relax if you forget to start a session. Up to 10 days of battery life - The battery lasts for more than a week, so the Inspire 3 won't give up easily. Battery life depends on usage behavior and other factors.