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Fitbit Charge 5 Lunar White/Soft Gold Stainless Steel Advanced Fitness Tracker - FB421GLWT

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Abt Model: FB421GLWT UPC: 810038855875
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Fitbit FB421GLWT Charge 5 Lunar White/Soft Gold Stainless Steel Advanced Fitness Tracker

Meet our most advanced fitness & health tracker with tools like an on-wrist ECG app for heart health,2 EDA Scan app for stress management and more. Get a 6-month membership of Fitbit Premium™3 and optimize your routine with Daily Readiness Score.*

Key Features

  • Vibrant Display
    See your routine in a new light that's 2X brighter than Charge 4, and use always-on display mode to check your progress with just a glance.1
  • Heart Rate Notifications
    Stay informed when Charge 5 detects your heart rate is above or below your threshold.
  • Active Zone Minutes
    Active Zone Minutes guides you to your target heart rate zones and helps you keep up the intensity.
  • Sleep Tracking & Sleep Score
    Get a better understanding of your sleep quality and stages so you can wake up feeling energized.
  • Silent Alarms & Smart Wake
    Wake up to peaceful mornings at your optimal sleep stage with a quiet vibration on your wrist.
  • 20 Exercise Modes & SmartTrack
    Set personal goals and choose from 20 exercise modes for real-time stats.
  • Smart Notifications
    Stay in the loop with call, text, calender and smartphone app notifications-including Gmail, WhatsApp and more. ◆◆◆



  • Fitbit ECG (Electrocardigram) 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.* Coming Soon.
  • EDA (Electrodermal Activity) Scan App
    Use the on-wrist EDA Scan app to detect electrodermal activity—tiny changes in your skin's sweat level which may indicate your body's response to stress.
  • 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.
  • Reflections
    Easily log your mood in the app from Very Stressed to Very Calm and observe changes over time.
  • 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.**
  • Heart Rate Variability
    Understand if your body is showing potential signs of stress, illness or fatigue based on your past month’s trends in the variation of time between each heartbeat—known as heart rate variability.***
  • Breathing Rate
    Get to know your average breaths per minute and see if there are any sudden increases that could indicate a change in your well-being with a view of your breathing rate trends from the past month.***
  • Skin Temperature Tracking
    Track your skin temperature variation each night so you can be aware of potential signs of changes in your body like fever or ovulation.◆
  • 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.
  • Menstrual Cycle Tracking
    Know your body better by using the Fitbit app to log periods, record symptoms and discover patterns in your cycle.◆◆
  • Health & Wellness Reminders
    Activate optional personalized reminders for beneficial tasks that can be tough to remember, like staying hydrated, sticking to a sleep schedule, finding time to exercise and more.


  • Daily Readiness Score
    Do what’s best for your body with a Daily Readiness Score that shows whether you’re ready to work out or should prioritize recovery.§ Coming Soon.
  • Active Zone Minutes
    Get the results you want from every workout. Active Zone Minutes uses your heart rate to guide you toward your desired intensity level.
  • 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 in the Fitbit app.
  • Built-In GPS
    See your real-time pace & distance without your phone using built-in GPS during outdoor activity, then see a map of your workout route in the Fitbit app.†
  • SmartTrack
    Forget to start tracking? No problem. SmartTrack® automatically recognizes and records workouts like elliptical, runs, swims and more.
  • 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.
  • 20 Exercise Modes
    Set personal goals for runs, rides and more, then get real-time stats to help you keep your pace or maintain your target heart rate zone.
  • All-Day Activity Tracking
    Track activity like steps, distance, Active Zone Minutes and calories burned to show how every part of your day gets you closer to your goals.
  • Cardio Fitness Level
    Get to know your VO2 max—a measurement of how well your body uses oxygen when you’re working your hardest—and see how you improve over time.
  • Swimproof
    Get water resistance up to 50 meters, and feel free to wear Charge 5 in the pool, in the rain, at the beach and beyond.


  • 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 goals.
  • Sleep Mode
    Use 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.
  • Smart Wake
    Wake up feeling rested with the Smart Wake alarm that goes off during your optimal stage of sleep—within 30 minutes before its set time.
  • Do Not Disturb Mode
    Mute call, text, calendar and app notifications during the day using do not disturb mode.
  • Up to 7-Day Battery Life
    Track all your moves for up to 7 days without having to stop for a charge with a long battery life.†
  • Fitbit Pay
    Use Charge 5 to make contactless purchases on the go—at coffee shops, grocery stores, transit stations and more. No phone or wallet needed.‡

Design & More

  • Vibrant Color Display
    Bring your stats 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.†
  • 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.
  • Accessories
    Easily switch up your look with accessories that have a new quick-release mechanism. Sold separately.


  • 1 Battery life varies with use and other factors. Up to 5 hours with continuous GPS. Always-on display mode requires more frequent charging.
  • 2. **New and returning Premium members only. Must activate membership within 60-days of device activation (requires valid payment method). This membership cannot be gifted. Cancel before membership ends to avoid recurring fees. Content and features may change. See here for more details. T&C apply.
  • 3 ***Requires Premium Subscription.
  • *COMING SOON. The Fitbit ECG app will be available soon on Charge 5 in select countries. Not intended for use by people under 22 years old.
  • **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.
  • ***The Health Metrics dashboard and the metrics displayed in the dashboard are not available in all countries. This feature 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.
  • ◆Not available in all markets. Significant changes in ambient temperature may negatively impact skin temperature tracking.
  • ◆◆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.
  • ◆◆◆Available when phone is nearby.
  • §COMING SOON. Daily Readiness requires a membership to Fitbit Premium. Premium content recommendations may be available in English only and not in all locales.
  • †Battery life varies with use and other factors. Up to 5 hours with continuous GPS. Always-on display mode requires more frequent charging.
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