Fitbit FB424BKBK Fitness Tracker: Advanced health monitoring with 24/7 heart rate, stress management, and sleep score
For the busy professional juggling work and wellness, the Fitbit Inspire 3 is your silent partner in health. It’s not just a fitness tracker; it’s a tool for managing daily stress and finding balance. The stress management feature alerts you to take a breath when your heart rate spikes during a hectic meeting, helping you reset without disrupting your flow.
This indoor companion offers advanced health insights with 24/7 heart rate monitoring and comprehensive sleep tracking. You’ll see your sleep score improve as you adjust habits based on detailed light, deep, and REM stage analysis. With smart notifications, you stay connected without constantly checking your phone. The long battery life means you can wear it for days, tracking workouts and monitoring your health seamlessly. It’s Alexa compatible for hands-free control, making it a natural part of your routine.
Features
- Workout intensity map with Active Zone Minutes for real-time exercise effort
- Comprehensive sleep tracking with light, deep, and REM stage analysis
- Smart notifications for calls, texts, and apps like weather
- Long battery life up to 10 days and water resistance up to 164 feet
- Advanced health monitoring with 24/7 heart rate, stress management, and sleep score
General specs
- Brand: Fitbit
- Model: FB424BKBK
- Seller: Amazon
- ID: B0B6WRFY5S
- Size: Small
- Weight: 130
- Material:
- Battery Life: 10
- Connectivity: Bluetooth
- Display Size:
- Display Type:
- Health Sensors: Heart Rate
- OS Compatibility:
- Storage Capacity:
- Water Resistance: 5ATM
- Bluetooth Version:
- First listed by seller: 1/21/26
If you are interested in more details, you can find full information on the seller's page.
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Comparison with similar products
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
Fitbit FB424BKBK Black
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Fitness Tracker Smart Band Black
|
Xiaomi Smart Band 10 White Activity tracking
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ZKSSGY C60 Black 24/7 heart rate and blood oxygen monitoring
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PJIVE DS10 Pink
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GenXenon H01 Silver Heart rate and blood oxygen monitoring
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| Brand | Fitbit | USMECBL | Xiaomi | ZKSSGY | PJIVE | GenXenon |
| Model | FB424BKBK | Smart Band 10 | C60 | DS10 | H01 | |
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| Price | $99.95 | $28.99 | $78.82 | $23.19 | $179.99 | $19.99 |
| Seller | Amazon | Amazon | re:Store | Amazon | Amazon | Amazon |
| Update | January 21, 2026 | January 16, 2026 | January 23, 2026 | December 9, 2025 | January 14, 2026 | November 9, 2025 |
| Size | Small | Adjustable | M | Small | US 7 | |
| Weight | 130 | <num1>, <num2> | 13.5 | 25 | 18.4 | |
| Material | Silicone | Silicone | Nylon, Silicone | |||
| Battery Life | 10 | 10, 14 | 14 | 7 | 40, 60 | |
| Connectivity | Bluetooth | Bluetooth | Bluetooth | Bluetooth | Bluetooth | |
| Display Size | 1.47 | 1.47 | 1.1 | |||
| Display Type | AMOLED | AMOLED | Touchscreen, Color, AMOLED | |||
| Health Sensors | Heart Rate | Blood Oxygen, Heart Rate | Heart Rate, SpO2 | Blood Oxygen, Blood Pressure, Heart Rate | ||
| OS Compatibility | Android, iOS | Android, iOS | Android, iOS | Android, iOS | ||
| Storage Capacity | <num1>, <num2> | |||||
| Water Resistance | 5ATM | IP68 | 5 ATM | IP68 | IP68 | |
| Bluetooth Version | 5.0 | 5.2 | 5.3 | 5.0 | ||