Fitbit Charge 4 Black Advanced Fitness Tracker

Take your goals further with a health & fitness tracker that packs built-in GPS for pace and distance, 24/7 heart rate tracking and more into a comfortable wristband.

This sleek, swimproof tracker is packed with features that help you know your workouts and your body better—like built-in GPS, Active Zone Minutes, a new exercise mode and sleep tracking. Plus, with Fitbit Pay and up to 7-day battery, you get more convenience on the go and more inspiration to reach your fitness goals. Water resistant to 50M.​ ​Battery life varies with use and other factors;​ up to 5 hours with continuous GPS.

Product features:

• HEART RATE - Use 24/7 heart rate to better track calorie burn, optimize workouts and uncover health trends that inspire you to make moves on your health and fitness goals.
• RESTING HEART RATE - Wear Fitbit Charge 4 all day and night to record and reveal your resting heart rate, track heart rate trends over time, and follow your health and fitness progress.
• HEART RATE ZONES - Now heart rate zones are personalized based on your age and resting heart rate, so when you’re exercising you get a more accurate understanding of how hard your body’s working.
• WORKOUT INTENSITY MAP - IN APP ONLY - After outdoor exercise, check your workout intensity map in the Fitbit app to see your heart rate zones throughout your route and learn where you put in the most effort.
• ACTIVE ZONE MINUTES - With new Active Zone Minutes, your tracker buzzes when you reach your target heart rate zones during exercise, and celebrates when you earn extra minutes outside of exercise.