20 Exercise Modes Set your personal goals and pick from 20 exercise modes for real-time stats Sleep Tracking and ScoreTrack your sleep quality and stages to get a better understanding. Silent Alarms and; Smart AwakeBe woken at your optimal sleep stage with quiet vibrations on your wrist. Smart NotificationsKeep in the loop with calls texts and smartphone notifications from your phone. Key features . Up to 7 days of battery life . Built in GPS . Up to 50 meters water resistance . 24/7 Heart Rate Monitoring . Blood Oxygen Monitoring . Compatible with iOS and; Android . Track your wellness . Track important changes in your wellness with health metrics like your blood oxygen level heart rate variability breathing rate and more . Dive in . The Fitbit Charge 5 is water-resistant to 50 meters. This device can be worn in the pool or shower however please don’t take it into the sauna or soak it in the bath with it on. . . Focus on your heart health . Keep an eye on your heart with the EGC app that assesses your heart for irregular rhythm. Get heart rate notifications that let you know when you go above or below your thresholdVibrant Display . The display is two times brighter than the Charge 4 and you can use the always-on display mode to check your progress at a glance.