Introduction
The Fitbit Inspire 3 is a health and fitness tracker designed to monitor various aspects of your well-being, including activity, stress, and sleep. This manual provides instructions for setting up, operating, maintaining, and troubleshooting your device.

Image: Fitbit Inspire 3 device with a black band, showing the time (12:58) and heart rate (73 bpm) on its display.
Setup
1. Unboxing and Initial Charge
Upon opening the package, you will find the Inspire 3 device, two bands (small and large), and a charging cable. Before first use, fully charge your device. Connect the charging cable to a USB power source and attach the magnetic end to the back of your Inspire 3. A full charge typically provides up to 10 days of battery life.

Image: Contents of the Fitbit Inspire 3 box, including the tracker, two different sized bands, and the USB charging cable.
2. Attaching the Bands
Select the band size that best fits your wrist. To attach a band, slide the pin into the small hole on the tracker, then push the other end of the pin inward and slide it into the opposite hole. Ensure both ends are securely fastened.
3. Installing the Fitbit App and Pairing
- Download the Fitbit app from the Apple App Store (for iOS devices) or Google Play Store (for Android devices).
- Open the Fitbit app and follow the on-screen instructions to create an account or log in to an existing one.
- Tap your profile picture > Set Up a Device.
- Select Inspire 3 and follow the prompts to pair your tracker with your mobile device. Ensure Bluetooth is enabled on your phone.
Operating Your Inspire 3
Basic Navigation
The Inspire 3 features a color touchscreen. Swipe up, down, left, or right to navigate through menus and statistics. Press the side buttons to return to the clock face or access quick settings.
Activity Tracking
Your Inspire 3 continuously tracks your daily activity, including steps, distance, calories burned, and Active Zone Minutes. It also monitors your heart rate 24/7. The device can automatically recognize and track various exercises. You can set reminders to move within the Fitbit app.

Image: Visual representation of activity tracking features, including all-day activity, Active Zone Minutes, and Daily Readiness Score.
Health Monitoring
- Stress Management Score: Provides insights into your body's physical stress response.
- Mindfulness Sessions: Access guided breathing and mindfulness exercises through the Fitbit app.
- Irregular Heart Rhythm Notifications: Monitors for signs of irregular heart rhythms. Consult a healthcare professional if you receive such notifications.
- SpO2 (Blood Oxygen): Tracks your blood oxygen saturation levels.
- Skin Temperature: Monitors variations in your skin temperature.
- Menstrual Health Tracking: Log periods, track ovulation, and estimate fertile windows in the Fitbit app.
- Resting Heart Rate & High/Low Heart Rate Notifications: Provides alerts if your heart rate is outside your typical range.

Image: Display of stress management features, including Stress Management Score, Mindfulness Sessions, and Reflections.

Image: Screenshot of the Fitbit app showing health metrics like Resting Heart Rate, SpO2, and Skin Temperature.
Sleep Tracking
The Inspire 3 automatically tracks your sleep, providing a detailed Sleep Score, sleep stages (light, deep, REM), and consistency of your sleep schedule. The Smart Wake feature uses a silent vibrating alarm to wake you during an optimal sleep stage.

Image: Overview of sleep tracking features, including Smart Wake, Sleep Tracking & Sleep Score, and Sleep Profile.
Notifications
When your phone is nearby, the Inspire 3 can display notifications for calls, texts, and other smartphone apps. Manage these settings within the Fitbit app.
Water Resistance
The Inspire 3 is water resistant up to 50 meters, making it suitable for swimming and showering. After exposure to water, dry the device and band thoroughly.
Fitbit Premium
The Inspire 3 includes a 6-month Fitbit Premium membership for new users. This provides access to advanced insights, personalized guidance, exclusive workouts, and mindfulness sessions. Activation is required within 60 days of device activation, and a valid payment method is needed. Cancel before the trial ends to avoid subscription fees.

Image: Screenshot of the Fitbit Premium section within the app, highlighting advanced sleep analytics, wellness reports, and guided sessions.
Maintenance
Cleaning Your Device
Regularly clean your Inspire 3 and its band to prevent skin irritation and maintain device functionality. Use a soft, lint-free cloth dampened with water. Avoid harsh soaps or abrasive cleaners. Ensure the device is completely dry before wearing it again.
Charging
Charge your Inspire 3 when the battery indicator is low. Use the provided charging cable and connect it to a USB power source. Charging typically takes 1-2 hours for a full charge.
Software Updates
Periodically check for software updates through the Fitbit app. Updates provide new features, bug fixes, and performance improvements. Ensure your device is charged before initiating an update.
Troubleshooting
- Device Not Syncing: Ensure Bluetooth is enabled on your phone and the Inspire 3 is within range. Restart both your phone and the tracker. Check if the Fitbit app is up to date.
- Inaccurate Heart Rate/Activity: Ensure the tracker is worn snugly but comfortably on your wrist, about a finger's width above your wrist bone. Clean the sensor on the back of the device.
- Battery Draining Quickly: Reduce notification frequency, turn off always-on display (if applicable), and ensure background app refresh is optimized.
- Screen Unresponsive: Try restarting the device by connecting it to the charger and pressing the button on the charging cable three times within eight seconds, pausing for one second between presses.
For further assistance, refer to the Fitbit support website or contact customer service.
Specifications
| Model Number | FB424BKBK-FRCJK |
| Dimensions | 14.96 x 0.19 x 1.17 cm |
| Weight | 17.69 g (device only) |
| Material | Silicone (band) |
| Battery Life | Up to 10 days |
| Water Resistance | Up to 50 meters |
| Screen Size | 0.74 Inches |
| Sensor Type | Optical Heart Rate Sensor |
| Compatible Devices | Smartphones (iOS and Android), Tablets, Laptops |
Warranty and Support
For information regarding your product's warranty, please refer to the official Fitbit website or the documentation included with your purchase. For technical support, troubleshooting guides, and frequently asked questions, visit the Fitbit Help Center online.
Important: Actual product packaging and materials may contain more and different information than what is presented here. Always read labels, warnings, and directions before using or consuming a product.





