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Fitbit Charge 5 Advanced Fitness and Health Tracker - Black / Graphite Stainless Steel (FB421BKBK-FRCJK)
Model #: FB421BKBK-FRCJK|UPC #: 810038855899

Redefine routine with Fitbit Charge 5 + Premium — Fitbit's most advanced fitness and health tracker that shows you whether you are ready to work out or should prioritize recovery.

$169
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Reg. $229.99

Sale Ends: 2021-12-14
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Do what’s best for your body

Fitbit Charge 5 + Premium connects the dots between your activity, sleep and stress so you can make the best decisions for your body, mind and health. It all starts with your 6-month Premium membership* and Daily Readiness*, a score based on activity, sleep and heart rate variability (HRV) that helps you optimize your workout routine. Your score comes with personalized activity recommendations: low means go easy and recover—light yoga, deep breathing—while a high score gives you the green light to go all out.

Group of people sitting on basketball court

Enhance your recovery routine with advanced stress-management tools like the on-wrist EDA sensor. Stay ahead of heart health with atrial fibrillation (AFib) heart rhythm assessments using the on-wrist ECG app.* And you’ll always have motivation to reach new goals with hundreds of guided workouts, a gallery of refreshing mindfulness sessions plus the fitness features you know and love like Active Zone Minutes and built-in GPS.

*COMING SOON. Daily Readiness requires a Fitbit Premium membership. Premium content recommendations are not available in all locales and may be in English only.

Woman doing yoga


HEALTH & FITNESS

Daily Readiness Score

Taking time to recover can produce better results than working out hard all the time. Understand what’s best for your body with the Daily Readiness Score on Fitbit Premium. Each morning, you’ll get a score in the Fitbit app based on your activity, sleep and heart rate variability. You'll also get a personalized goal for the day, plus recommended workouts or recovery sessions, depending on what your body needs that day. As you get more fit over time, your scores and daily goals adapt with you.*

*COMING SOON. Daily Readiness requires a Fitbit Premium membership. Premium content recommendations are not available in all locales and may be in English only.

Fitbit Charge 5 with Phone

Fitbit and phone with Stress Management Score on screen

Stress Management Score

Get a daily score showing your body’s physical response to stress. You can see how your exercise routine, mindfulness practice and sleep help to manage your stress levels.

EDA Sensor

Take steps to improve your stress levels with an on-wrist EDA sensor mindfulness session. The app detects electrodermal activity—tiny changes in your skin's sweat level which may indicate your body's response to stress.

Fitbit ECG (Electrocardiogram) App

Keep track of your heart health with a compatible ECG app* that assesses your heart for atrial fibrillation—a heart rhythm irregularity—and share the results with your doctor.

*The Fitbit ECG app is only available in select countries. Not intended for use by people under 22 years old. See fitbit.com/ecg for additional details.

High & Low Heart Rate Notifications

Your heart rate is a key indicator of health, so stay informed when Charge 5 detects that your heart rate is above or below your threshold.

Fitbit Charge 5 with Heart Rate on screen

Fitbit Charge 5 plus phone with map on screen

Built-In GPS

See your real-time pace & distance without your phone using built-in GPS during outdoor runs, rides, hikes and more, then see a map of your workout route in the Fitbit app. If you have your phone nearby, Charge 5 connects to your phone's GPS to help extend your tracker's battery.*

* Varies with use and other factors. Up to 5 hours with continuous GPS

Workout Intensity Map

After outdoor exercise with GPS, check your workout intensity map in the Fitbit app to see your pace and heart rate zones throughout your route and learn where you put in the most effort.

6-Month Premium Membership

Charge 5 unlocks a 6-month membership complete with personalized insights, advanced analytics, guided programs, mindfulness & sleep tools, workouts and more.

New and returning Premium users only. Must activate membership within 60 days of device activation (requires valid payment method). Cancel before membership ends to avoid recurring fees. Content and features may change. T&C apply.

24/7 Heart Rate Tracking with PurePulse®

Track calorie burn and optimize workouts with PurePulse continuous heart rate tracking, then see your resting heart rate trends and cardio fitness level (VO2 Max) in the Fitbit app.

Fitbit Charge 5 plus phone with Fitbit App on screen

Man hiking with a Fitbit Charge 5

Active Zone Minutes

Get the results you want from every workout and see how all your activity adds up over the week. Active Zone Minutes uses your heart rate to guide you toward your desired intensity level—then helps keep you there. Check the app to see if you’re reaching the Word Health Organization’s recommendation of 150 minutes of moderate activity per week. Short on time? Vigorous exercise earns you double minutes.

Woman doing exercises with weights wearing a Fitbit Charge 5

20 Exercise Modes & SmartTrack®

Set personal goals for runs, rides, strength training and more, then get real-time stats to help you keep the pace or maintain your target heart rate zone.

Forget to start tracking? No problem. SmartTrack automatically recognizes and records workouts like elliptical, runs, swims and more.

Cardio Fitness Level

Get to know your VO2 max—a measurement of how well your body uses oxygen when you’re working your hardest. Keep tabs on your score to see how you improve over time.

Fitbit Charge 5 smart watch on wrist

Oxygen Saturation (SpO2) Monitoring

Track SpO2—the level of oxygen in your blood—to help you learn when there may be an indication of important changes in your overall wellness.*

*Not available in all markets. The SpO2 feature is not intended to diagnose or treat any medical condition or for any other medical purpose. It is intended to help you manage your well-being and keep track of your information. This feature requires more frequent charging.

Skin Temperature Tracking

Charge 5 tracks your skin temperature variation each night to spot changes from your baseline. Changes could be related to environmental or wellness factors. Not available in all markets. Significant changes in ambient temperature may negatively impact skin temperature tracking.

Health Metrics Dashboard

Track SpO2—the level of oxygen in your blood—plus heart rate variability, skin temperature variation and more.*

* The Health Metrics dashboard and the metrics displayed in the dashboard are not available in all countries. This feature is not intended to diagnose or treat any medical condition and should not be relied on for any medical purposes. It is intended to provide information that can help you manage your well-being. If you have any concerns about your health, please talk to a healthcare provider. If you believe you are experiencing a medical emergency, call emergency services.

Timer & Stopwatch

Get instant access to tools that make your life easier—like a timer for interval training and a stopwatch for tracking sets at the gym.

All-Day Activity Tracking

Charge 5 tracks all-day activity like steps, distance, Active Zone Minutes and calories burned to show how every part of your day gets you closer to your goals.

Health & Wellness Reminders

Activate optional personalized reminders for beneficial tasks that can be tough to remember, like staying hydrated, sticking to a sleep schedule, getting in activity and more.

Swimproof

Charge 5 is water resistant up to 50 meters, which means you’re free to wear it in the pool, in the rain, at the beach and beyond.

Menstrual Cycle Tracking

Know your body better by using the Fitbit app to log periods, record symptoms and discover patterns in your cycle.*

* This feature is not intended to be used for contraceptive or other medical purposes. Fitbit does not guarantee or warrant that this feature can be used to achieve particular results. This feature may not accurately predict your menstrual cycles or related information. This feature is intended only to help users monitor and keep track of certain information.

SMART

Notifications

Get notifications for calls, texts, calendar events and smartphone apps like Gmail, WhatsApp and Facebook—plus send quick replies right from your wrist.*

* Quick replies for Android users only.

Google Fast Pair

Android users can use Google Fast Pair to help streamline setup and get going on their goals.

Woman looking at Fitbit on her writst

Fitbit Pay™

Load your credit and debit cards to your Wallet in the Fitbit app, then use Charge 5 to make contactless purchases on the go—at coffee shops, grocery stores, transit stations and more. No phone or wallet needed.*

Customer paying with Fitbit Pay

*See bank and transit availability at fitbit.com/fitbit-pay/banks

Fitbit Charge 5 with sleep timer screen

SLEEP

Sleep Score & Sleep Stages

Get a better understanding of your sleep quality with a daily Sleep Score and graphs of your time in light, deep and REM sleep—then see how you can improve your sleep and wake up feeling energized.

Silent Alarms

Wake up to more peaceful mornings with a quiet vibration alarm on your wrist.

Smart Wake

Wake up feeling ready to take on the day with the Smart Wake alarm that goes off during your optimal stage of sleep—within 30 minutes before its set time.

Sleep Mode

Snooze uninterrupted by using sleep mode to mute smartphone notifications and stop your screen from turning on at night. Set a schedule on your wrist to turn sleep mode on automatically.

Do Not Disturb Mode

Mute call, text, calendar and app notifications during the day using do not disturb mode.

DESIGN & MORE

Up to 7-Day Battery Life

With a long battery life, Charge 5 tracks all your moves for up to 7 days without having to stop for a charge.*

*Battery life varies with use and other factors.

Vibrant Color Display

Your stats come to life on a new color touchscreen that’s two times brighter than Charge 4 in daylight and protected by Corning® Gorilla® Glass 3.

Always-On Display Mode

See real-time exercise stats and check the time with just a glance—even mid plank—when you turn on always-on display.*

*Always-on display mode requires more frequent charging

Woman looking through binoculars wearing a Fitbit Charge 5

Accessories

Switch up your look with accessories that let you style your tracker your way—the quick-release feature makes it easier than ever. Sold separately.

Infinity Bands

Infinity bands are flexible and optimized for workouts and all-day wear. Plus, with a quick-release mechanism, it’s easier than ever to swap looks.

Sleek Design

Charge 5 is packed with new technology, yet 10% slimmer than Charge 4. It features a stainless steel build and a polished finish while sitting flat on the wrist for a modern, minimalist look.

Specifications:

Sensors & Components

Optical heart rate monitor

  • 3-axis accelerometer
  • Built-in GPS + GLONASS
  • Red and infrared sensors for oxygen saturation (SpO2) monitoring
  • Device temperature sensor (skin temperature variation available in the Fitbit app)
  • Vibration motor
  • Ambient light sensor
  • Radio transceiver: Bluetooth
  • NFC
  • Multipurpose electrical sensors compatible with ECG app & EDA Scan app

Battery & Power

  • Battery life of up to 7 days. Use of the always-on display and SpO2 features will require more frequent charging. We recommend charging your tracker every few days to ensure you are always tracking.
  • Battery type: Lithium-polymer
  • Charge time (0-100%): Two hours

Memory

  • Saves 7 days of detailed motion data, minute by minute
  • Saves daily totals for the last 30 days
  • Stores 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 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. 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

The Charge 5 housing is made of aluminum, glass and resin. The band is made of silicone and has an aluminum buckle.

Heart Rate

Like all heart rate tracking technologies, accuracy is affected by physiology, location of device and different movements.

Environmental Requirements

  • Operating temperature: -10° to 45°C
  • Maximum operating altitude: 8535m

Syncing

The Fitbit app is compatible with most popular phones. To set up and use your Fitbit products and services, you must install the Fitbit app on a compatible device running one of the following operating systems:

  • Apple iOS 12.2 or higher.
  • Android OS 8.0 or higher.

Syncing range: Up to 9m

  • Certain features like smartphone notifications may require Android 8.0+.
  • Syncing requires Bluetooth® LE and internet connection.
  • Syncs with Mac OS X 12.2 and up, iPhone 5S and later, Android 8.0 and later.

Band Size

Small: Fits wrist 130mm - 170mm in circumference

Large: Fits wrist 170mm - 210mm in circumference

Window Size

  • Viewing area: 26.43mm diagonal
  • Screen height: 21.93mm
  • Screen width: 14.75mm
• Fitbit Charge 5
• Infinity band (small & large)
• Charging cable
  • Product Parts Warranty: 1 Year Limited
  • Product Labour Warranty: 1 Year Limited