Fitbit Charge 4 (NFC) Activity Fitness Tracker, Black

Use built-in GPS to see your pace and distance on screen during outdoor runs, rides, hikes and more and see a workout intensity map in the app that shows your heart rate changes along your route With Active Zone Minutes, feel a buzz when you reach your target heart rate zones during exercise, and celebrate when you earn extra minutes outside of exercise Use 24/7 heart rate to track resting heart rate  &  better measure calorie burn Play your favorite songs and playlists with Spotify app controls on your wrist and make secure purchases with Fitbit Pay Track workouts in real-time with 20+ goal-based exercise modes. It’s also swim proof and water resistant to 50M so you can track swims, wear in the shower and more Multi-day battery lasts up to 7 days and up to 5 hours when using built-in GPS (varies with use  &  other factors) Track sleep stages  &  review your in-app Sleep Score for an easy way to see how well you slept Get call, text and smartphone app notifications on your wrist. Plus, send quick replies to texts (Android only). Available when your phone is nearby Specifications: 24/7 Heart Rate Monitor Built-In GPS 7 Day Battery Life (Varies With Use) Heart Rate Zones Feature Workout Intensity Map All Day Activities And Sleep Tracking Sleep Stages And Score Feature Resting Heart Rate Feature Swimproof Feature Reminders To Move Intuitive Touchscreen Guided Breathing Sessions Notifications And Apps Wireless Sync