Fitbit Charge 4 Fitness & Activity Tracker, Built-in GPS, Heart Rate - Rosewood (Certified Refurbished)
With Fitbit Charge 4, there’s no limit to how far you can go. This sleek, swim-proof tracker is packed with features that help you know your workouts and your body better—like built-in GPS, Active Zone Minutes, SpO2, exercise modes and sleep tracking. Plus, with Fitbit Pay™ and up to 7-day battery life, you get more convenience on the go and more inspiration to reach your fitness goals.
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. Operating temperature: -20° to 60° C
Use 24x7 heart rate to track resting heart rate & better measure calorie burn. Syncing to mobile devices requires Bluetooth LE and Internet connection. Syncs with Mac OS X 12.2 and up, iPhone 5S and later, iPad 5 gen. and later, Android 7.0 and later
See your SpO2 nightly average and range on the wrist, and view trends over the past week in the Fitbit app (SpO2 is not available in all markets. The SpO2 feature is not intended to diagnose or treat any medical condition or for any other medical purpose)
Track your skin temperature each night to see how it varies from your personal baseline (Not available in all markets. Only available in the Fitbit app and only displays variation. Not intended for medical purposes)
Track workouts in real-time with 20+ goal-based exercise modes. It’s also swim-proof and water-resistant to 50 Meters, so you can track swims, wear in the shower, and more