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Fitbit Sense 2 Graphite/Graphite
FB521BKGB-FRCJK
$358
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Product Overview
Key Features
- Smart watch with 1.58 Inch AMOLED display
- Heart rate, ECG, SpO2, sleep and stress tracking
- Up to 6 plus days battery life, fast charging
- Bluetooth 5.0, water resistant, GPS enabled
Key Specifications
- Brand:
- Fitbit
- Model Number:
- FB521BKGB-FRCJK
- Compatible Phones:
- Apple iOS 16.4 or higher, Android OS 11.0 or higher, Certain features like smartphone notifications may require Android 11+
- Face Size (mm):
- 40
- Display:
- AMOLED with Corning Gorilla Glass 3
- GPS:
- GPS + GLONASS
Phones & Wearables
- Strap:
- Small band fits wrists 5.1 - 7 inches, Large band fits wrists 6.5 - 8.6 inches in circumference
Screen Technology
- Display Resolution (px):
- 336 x 336
Capacity
- Storage Capacity:
- 4GB
- Memory:
- Tracks 7 days of minute by minute activity data
Connections
- Connections:
- Bluetooth v5.0
Power & Charging
- Battery Life:
- Up to 6 Days
Options
- Sensor Technology:
- Multi-path optical heart rate sensor, Electrical sensor for skin conductance (cEDA) compatible with ECG app & EDA app, Red and infrared sensors for oxygen saturation (SpO2), Gyroscope, Altimeter, Accelerometer
- Trackers:
- Sleep Mode & Profile, Smart Wake, Stress Management Score, ECG App, Health Metrics, Daily Readiness Score
Audio
- Audio:
- 75dB SPL 10cm Speaker & Microphone
Safety
- Water Resistant:
- Up to 50m (swimproof)
General Information
- Type:
- Smart Watch
- Family:
- Sense 2
- Colour:
- Grey
- Supplier Colour:
- Graphite/Graphite
- Band Colour:
- Grey
- Materials:
- Aluminum watch case and buckle
- Subscription:
- Google account and Fitbit app required to use
- Additional Features:
- Vibration motor, 40+ Exercise Modes, Built-in Alexa Voice Assistant, Google Wallet
- What's In The Box:
- Classic bands (small & large), Charging cable
Warranty
- Manufacturer's Warranty:
- 2 Year
Phones & Wearables
- Strap:
- Small band fits wrists 5.1 - 7 inches, Large band fits wrists 6.5 - 8.6 inches in circumference
Capacity
- Storage Capacity:
- 4GB
- Memory:
- Tracks 7 days of minute by minute activity data
Power & Charging
- Battery Life:
- Up to 6 Days
Audio
- Audio:
- 75dB SPL 10cm Speaker & Microphone
General Information
- Type:
- Smart Watch
- Family:
- Sense 2
- Colour:
- Grey
- Supplier Colour:
- Graphite/Graphite
- Band Colour:
- Grey
- Materials:
- Aluminum watch case and buckle
- Subscription:
- Google account and Fitbit app required to use
- Additional Features:
- Vibration motor, 40+ Exercise Modes, Built-in Alexa Voice Assistant, Google Wallet
- What's In The Box:
- Classic bands (small & large), Charging cable
Product Dimensions
- Product Height (mm):
- 11.2
- Product Width (mm):
- 40.5
- Product Depth (mm):
- 40.5
- Product Weight (g):
- 37.6
Box Dimensions
- Box Height (mm):
- 66
- Box Width (mm):
- 177
- Box Depth (mm):
- 91
- Box Weight (kg):
- 0
Product Reviews of Fitbit Sense 2 Graphite/Graphite
Overall Rating Snapshot
4.5 out of 5 stars from 15 reviews
87% of users recommend this product
What customers say, summarised by AI
- Offers a wide range of health and fitness tracking features.
- Stylish appearance with easy setup and user-friendly interface.
- Some users dislike the silicone strap and find alternatives hard to find.
- Navigation can be tricky initially, but help resources are effective.
- Syncing and reliability issues have been reported by some users.
- Generally considered good value for money and a solid upgrade from Versa 2.
Pros
Easy (3)
Good product
Difficult to first navigate but help section is good
Debra
Confirmed purchase 8 March 2026
Published on 4 April 2026
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
Stylish watch
Great watch Lots of features. Stylish Tracks steps.
Kerrie Hoare
Confirmed purchase 12 December 2025
Published on 7 January 2026
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
awsome device
great unit
alex
Confirmed purchase 20 September 2025
Published on 22 December 2025
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
Smart watch
Worth for money
gaurav sharma
Confirmed purchase 8 October 2025
Published on 5 November 2025
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
Fitbit Sense 2
Happy with the watch/pulse
David
Confirmed purchase 15 January 2025
Published on 12 February 2025
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
Excellent features
Easy to install and use
Colin
Confirmed purchase 27 December 2024
Published on 22 January 2025
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
Love my new Fitbit Sence 2 . Easy to use
Tina
Confirmed purchase 20 December 2024
Published on 15 January 2025
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
Great watch
Not a fan of the silicone strap, difficult to find a fabric strap for this watch though. Features are great. Easy to work and download info
Tish
Confirmed purchase 26 May 2023
Published on 18 June 2023
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
Awesome watch
Great easier watch to use than the versa 2. Not a big fan of the silicone strap though
Tish
Confirmed purchase 26 May 2023
Published on 10 June 2023
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
Great product however you cannot respond to messages if you have an iOS Apple phone. The Fitbit sense 2 can only respond to messages if you have an Android device.
Has a lot of great health and fitness information
Anonymous
Confirmed purchase 18 May 2023
Published on 1 June 2023
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
You've viewed 10 of 15 reviews
ABOUT THE GOOD GUYS REVIEWS
The Good Guys product reviews are collected from verified purchasers who may have received an incentive in return for providing an authentic review.
The below information is AI generated based on Australian websites information around this item. We have done our best to ensure its accuracy but suggest verifying any information within this tab before purchasing.
At a glance
The Fitbit Sense 2 Graphite/Graphite is a feature-rich fitness tracker and smartwatch ideal for users focused on holistic health and stress management. It excels at advanced heart, sleep, and stress tracking, with a stylish, comfortable design and strong battery life. It's best for those wanting deep health insights, though its app ecosystem and third-party integrations are more limited than some competitors.
What it’s great for
- Health Monitoring
- Stress Management
- Sleep Tracking
- Fitness Tracking
- Everyday Wellness
Where it works best
- Home
- Gym
- Outdoors
- Office
- On-the-go
Who it’s for
- Health Enthusiast
- Fitness Beginner
- Wellness Seeker
- Busy Professional
Things to consider
The app ecosystem and third-party app support are more limited compared to some premium smartwatches.
Beginner vs athlete fit
Best for health-focused beginners and everyday users; suitable for casual athletes but lacks advanced sport-specific analytics.
Health monitoring depth
9/10 - Comprehensive tracking including ECG, SpO2, stress, and sleep metrics.
Smartphone compatibility
Compatible with most Android and iOS smartphones.
Battery endurance rating
8/10 - Up to 6 days typical use; faster drain with always-on display or GPS.
Water resistance score
8/10 - Suitable for swimming and showering, but not for deep water or diving.
Key benefits
- Advanced Heart Health Tracking: Monitors heart rate, detects irregular rhythms, and provides ECG functionality for deeper insights.
- Stress Management Tools: Includes an EDA sensor and guided breathing sessions to help manage daily stress.
- Sleep Tracking: Offers detailed sleep stage analysis and Sleep Score to improve rest quality.
- Long Battery Life: Up to 6 days of battery endurance on a single charge, reducing downtime.
- Built-in GPS: Tracks outdoor activities accurately without needing a phone.
- Water Resistance: Rated for swimming and showering, suitable for all-day wear.
- Voice Assistant Support: Compatible with Google Assistant and Alexa for hands-free convenience.
- Customisable Design: Interchangeable bands and sleek graphite finish suit various styles.
Q: What is the display size and resolution of the Fitbit Sense 2?
A: The Fitbit Sense 2 features a 1.58 Inch AMOLED display with a resolution of 336x336 pixels.
Q: How long does the battery last on the Fitbit Sense 2?
A: The Fitbit Sense 2 has a battery life of up to 6+ days with fast charging capabilities.
Q: What key health metrics does the Fitbit Sense 2 track?
A: The Fitbit Sense 2 tracks heart rate, ECG, oxygen saturation (SpO2), sleep, and stress levels.
Q: Which wireless connectivity options are available on the Fitbit Sense 2?
A: The Fitbit Sense 2 supports Bluetooth 5.0 for wireless connectivity.
Q: What are the dimensions and weight of the Fitbit Sense 2?
A: The Fitbit Sense 2 has a height of 91mm, width of 176mm, depth of 66mm, and weighs 200g.