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Fitbit Charge 4 detailed description
With key everyday apps, a quick swipe lets you set a timer, check the weather for your morning commute or use a stopwatch to time a workout.
Automatically sync to most popular iOS and Android devices to show your stats, trends, and progress on your Fitbit dashboard.
Set goals, track progress and get a more complete picture of your health and fitness—all on your dashboard in the Fitbit app.
Using sleep mode to mute smartphone notifications and stop your screen from turning on at night.
Use your credit and debit cards to make secure purchases anywhere that accepts tap-and-pay.
Control your music, like songs and browse recent playlists and podcasts all from your wrist. Works with the phone nearby; subscription required. Not available in all countries.
Do Not Disturb Mode.
Use do not disturb mode when you want to mute call, text, calendar and app notifications during the day.
Up to 7-Day Battery Life.
The battery lasts up to 7 days on a full charge.
Check your stats on your Fitbit tracker or smartwatch—and get the nudge you need to reach your goals.
Get call and calendar alerts, send text notifications and quick replies, plus see notifications from smartphone apps. Quick replies for Android phones are available when your phone is nearby.
Real-Time Pace & Distance using Built-In GPS.
See your real-time pace and distance without a phone, then get a map of your route in the Fitbit app.
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 workouts.
Automatically track floors climbed whether you’re taking the stairs or walking up an incline.
Reminders to Move.
See how long you’ve been active throughout the day and get reminders to fit in a few extra steps when you’ve been sitting a bit too long.
SmartTrack Automatic Exercise Recognition.
Automatically record select exercises like running, biking and more & see detailed workout information in the Fitbit app.
Water-resistant up to 50M, so you can wear your tracker or smartwatch in the shower, pool and beyond.
20+ Goal-Based Exercise Modes.
Choose from 20+ exercise modes like run, bike, swim, yoga and more, set a goal and get real-time stats during your workouts.
Stay on track toward your goals with personalized reminders that remind you to stay active, get hydrated, stick to a sleep schedule and more.
Workout Intensity Map.
After outdoor exercise, check your workout intensity map in the Fitbit app to see your heart rate zones throughout your route.
Heart Rate Zones.
Use your personalized fat burn, cardio, and peak heart rate zones to optimize your effort during workouts.
Design Style Features.
Backlit OLED display that responds to natural swiping and scrolling.
Switch up your look with accessories that let you wear your tracker or smartwatch your way. Sold separately.
Customizable Clock Face.
Personalize your smartwatch or tracker by choosing from a variety of clock faces designed for any occasion.
Cardio Fitness Score.
Get a better understanding of your fitness level and see how you can improve over time with a personalized Cardio Fitness Score.
Sleep Tracking with Light, Deep, REM.
See your time spent in light, deep and REM sleep stages and get sleep insights to help you improve.
Female Health Tracking.
Know your body on a deeper level using your tracker or smartwatch with the Fitbit app to follow your cycle, record symptoms and more.
Guided Breathing Sessions.
Find moments of calm throughout your day with personalized breathing sessions based on your heart rate.
24/7 Heart Rate Tracking.
Use a 24/7 heart rate to better track calorie burn, see your resting heart rate trends and get real-time guidance to optimize your workouts.
All-Day Activity Tracking.
Track steps, distance, calories burned, Active Zone Minutes, hourly activity & stationary time.
Based on your heart rate, time asleep and restlessness, this personalized score helps you better understand your sleep quality each night.
Resting Heart Rate.
Wear your tracker or smartwatch all day and night to record your resting heart rate and track heart rate over time.
Understand your rest with automatic sleep tracking and silent alarms on your wrist, plus bedtime reminders and tips in the app.
All-Day Calorie Burn.
Better understand how many calories you burn—all day and during workouts—to manage your weight and stay on track toward your goals.
Sensors & Components.
Optical heart rate monitor
Battery & Power.
Battery life up to 7 days, or up to 5 hours with continuous GPS use. Battery life and charge cycles vary with use, settings, and other factors; actual results will vary. We recommend charging every few days to ensure you’re always tracking.
Battery type: Lithium-polymer
Charge time (0-100%): Two hours
Radio transceiver: Bluetooth 4.0
Saves 7 days of detailed motion and heart rate data, minute by minute
Saves daily totals for past 30 days
Measures heart rate data at 1-second intervals during exercise tracking and at 5-second intervals all other times
Water-resistant to 50 meters. After swimming or getting the band wet, we recommend drying the band because, as with any wearable device, it’s best for your skin if the band is clean and dry. We do not recommend wearing Fitbit Charge 4™ in a hot tub or sauna.
Give your wrist a rest by taking the band off now and then. If the band gets wet or you sweat in it, remove and completely dry the band before putting it back on.
This tracker includes a plastic resin case and the band includes a stainless steel buckle. The classic band is made of a flexible, durable material similar to that used in many sports watches. The woven band is made from comfortable polyester.
Like all heart rate tracking technologies, accuracy is affected by physiology, location of device and different movements.
Operating temperature: -4° to 140° F
Operating temperature: -20° to 60° C
Maximum operating altitude: 28,000 feet
Maximum operating altitude: 8,535 m
Syncs automatically and wirelessly to most popular phones and tablets using Bluetooth LE wireless technology.
Syncing range: Up to 30 feet
Certain features like smartphone notifications may require Android 7.0+.
Syncing to mobile devices requires Bluetooth LE and an 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.
Music control via Bluetooth LE on Android and iOS devices.
Both small and large sizes included in the box.
Fits wrist 5.5″ – 7.1″ in circumference
Fits wrist 140 mm – 180 mm in circumference
Fits wrist 7.1″ – 8.7″ in circumference
Fits wrist 180 mm – 220 mm in circumference
1.4in l x 0.9in w x 0.5in h
35.8mm l x 22.7mm w x 12.5mm h