Up to 7 Days of Battery Life On-Wrist Heart Rate Monitor & ECG App Monitor Stress with EDA Scans Track Sleep, SpO2, HRV, Breathing & More Monitoring and maintaining a healthier lifestyle is made easier with the Fitbit Charge 5 Fitness & Health Tracker. Built-in sensors monitor your body throughout the day and the Fitbit mobile app keeps stats to help you track trends over time. When it comes to health, the on-wrist heart rate monitor and ECG app can detect if you have an irregular rhythm and an EDA scan can tell when you're stressed. These sensors also assist in other health metrics, such as SpO2, HRV, breathing, sleep, and more. Knowing how your body is functioning is only part of the equation. You also need to know how well you're exercising and whether your performance is improving over time. The Charge 5 can help with this as well, with 20 different exercise modes and a built-in GPS receiver for phone-free route tracking on rides, runs, and hikes. It's even swimproof to depths of 164', so you can use it in the pool or at the beach. The Charge 5 can also assist you in other aspects of your day, such as paying for items using contactless Fitbit Pay or giving you smartphone alerts and notifications from such apps as Gmail and WhatsApp. All of this can be managed on a built-in display that's made to be twice as bright as the previous Charge 4 for up to seven days on a full charge. In the Box Fitbit Charge 5 Fitness & Health Tracker Small Infinity Band Large Infinity Band Charging Cable