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Description
Details
HEALTH
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. Learn more.
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 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 minutes, hourly activity and stationary time.
Sleep Score
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.
Sleep Tracking
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.
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.
Floors Climbed
Automatically track floors climbed whether you're taking the stairs or walking up an incline.
Make every beat count with a fitness wristband built with PurePulse® heart rate, multi-sport modes, guided breathing sessions & interchangeable bands.
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.
Swimproof
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.
Personalized Reminders
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.
Apps
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.
Syncs Wirelessly
Automatically sync to most popular iOS and Android devices to show your stats, trends and progress on your Fitbit dashboard.
App Dashboard
Set goals, track progress and get a more complete picture of your health and fitness—all on your dashboard in the Fitbit app.
Sleep Mode
Use sleep mode to mute smartphone notifications and stop your screen from turning on at night.
Payments
Use your credit and debit cards to make secure purchases anywhere that accepts tap-and-pay.
Spotify - Connect & Control
Control your music, "like" songs and browse recent playlists and podcasts all from your wrist. Works with phone nearby; Spotify Premium 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
Battery lasts up to 7 days on a full charge. Up to 5 hours with GPS; varies with use and other factors.
On-Wrist Stats
Check your stats on your Fitbit tracker or smartwatch—and get the nudge you need to reach your goals.
Smartphone Notifications
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.
Greyscale Touchscreen
Backlit OLED display that responds to natural swiping and scrolling.
Accessories
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.
Specifications
Details
What's included:
Fitbit Charge 4
Classic wristbands (both small & large)
Charging cable
What’s included in special edition Charge 4
Fitbit Charge 4
Woven reflective band (both small & large)
Classic wristband (both small & large)
Charging cable
Sensors & Components
3-axis accelerometer
Optical heart rate monitor
GPS
Vibration motor
NFC
Altimeter
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
Memory
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 Resistance
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. Learn more.
Care
Give your wrist a rest by taking the band off every now and then. If the band gets wet or you sweat in it, remove and completely dry the band before putting it back on. Learn more.
Materials
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 a comfortable polyester.
Heart Rate
Like all heart rate tracking technologies, accuracy is affected by physiology, location of device and different movements.
Environmental Requirements
Operating temperature: -4° to 140° F
Maximum operating altitude: 28,000 feet
Syncing
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+. Check your device compatibility.
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.
Music control via Bluetooth LE on Android and iOS devices.
Band Size
Print this guide to find the right size for you. Both small and large sizes included in box.
Small
Fits wrist 5.5" - 7.1" in circumference
Large
Fits wrist 7.1" - 8.7" in circumference
Dimensions
1.4in l x 0.9in w x 0.5in h
