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Fitbit Sense 2 Graphite/Graphite
FB521BKGB-FRCJK
$445
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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
- 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
- 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
4.6 out of 5 stars from 17 reviews
88% of users recommend this product
What customers say, summarised by AI
- Offers impressive sleep tracking and customisable insights
- Setup is straightforward with helpful in-store staff support
- Navigation can be tricky at first, but help resources are useful
- Extensive health features including ECG and community support
- Strap comfort is a concern; fabric options are difficult to find
- Some users experienced severe syncing and reliability issues
Pros
Easy (3)
Fitness
Fantastic very intuitive and can be adjusted to suit sleep scores are amazing
Brian
Confirmed purchase 15 July 2026
Published on 12 August 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.
Perfect
Very pleased with new watch and your staff member set it up perfectly - Did a wonderfull job
Elizabeth Lee
Confirmed purchase 20 June 2026
Published on 15 July 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.
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.
You've viewed 10 of 17 reviews
ABOUT THE GOOD GUYS REVIEWSThe 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 is a premium-leaning fitness smartwatch for people who want strong health and stress tracking alongside everyday convenience. It suits wellness-focused users, casual exercisers and swimmers, with GPS, sleep insights and up to 6 days battery life. Its main limitation is that serious athletes may want more advanced training and performance analytics than this model focuses on.
What it's great for
- Everyday Health Tracking
- Stress Monitoring
- Sleep Insights
- Casual Fitness
- Walking and Running
- Swimming
- Daily Smartwatch Use
Where it works best
- Home
- Gym
- Outdoor Walks
- Outdoor Runs
- Pool
- Workplace
- Daily Commute
Who it's for
- Health-Conscious Adult
- Everyday User
- Casual Exerciser
- Swimmer
- Busy Professional
- Sleep Tracker User
Things to consider
It delivers strong wellness and stress tools, but dedicated athletes may prefer a more sport-focused watch with deeper training load, recovery and performance metrics.
Beginner vs athlete fit
Best for beginners to intermediate fitness users; capable for general training but less specialised for serious endurance athletes
Health monitoring depth
9/10 - Strong wellness coverage with heart rate, stress, sleep, SpO2 and ECG-focused features
Smartphone compatibility
Apple iOS 16.4 or higher, Android 11.0 or higher
Battery endurance rating
8/10 - Up to 6 days battery life is strong for a feature-rich health smartwatch
Water resistance score
8/10 - 50 m water resistance suits swimming and everyday water exposure
Key benefits
- Stress Tracking: The cEDA sensor helps you spot body-response changes through the day, making it easier to understand stress patterns.
- Heart Rate Monitoring: Multi-path optical heart rate tracking gives ongoing wellness data for workouts, recovery and daily health checks.
- Sleep Analysis: Sleep Profile and Sleep Score help turn overnight data into clearer guidance for improving rest habits.
- Built-in GPS + GLONASS: Tracks outdoor routes and distance more accurately without relying entirely on your phone.
- Battery Life: Up to 6 days of battery life means fewer charging interruptions during the week.
- Water Resistance: Water resistance to 50 m makes it suitable for swimming and everyday wear around water.
- Lightweight Design: At 37.6 g, it stays comfortable for all-day wear and overnight sleep tracking.
- Smart Features: Bluetooth calls, text notifications, Alexa and Google Wallet add practical convenience when your phone is nearby.
Q: Can I take calls on it without carrying my phone?
A: No. Fitbit Sense 2 supports on-wrist Bluetooth calls and text notifications only when your phone is nearby. It is not a standalone mobile watch, so calling, messaging and app-connected features depend on the paired phone being with you.
Q: Will Fitbit Sense 2 fit smaller or larger wrists comfortably?
A: Yes. Fitbit Sense 2 fits wrists from 5.1 to 8.6 inches, which covers many smaller and larger adult wrist sizes. The 37.6g case keeps it light for all-day wear, though band comfort still depends on how snugly you like to wear it.
Q: How long does the battery last with everyday tracking turned on?
A: Fitbit Sense 2 lasts up to 6 days with everyday tracking between charges. GPS use, frequent calls, brighter screen use and heavier notifications will shorten that, so the headline figure suits lighter mixed daily use rather than constant feature use.
Q: Which phones work with Fitbit Sense 2 in Australia?
A: Fitbit Sense 2 pairs with Apple iOS 16.4 or higher and Android 11.0 or higher. Calls, texts and supported Google or Alexa features still rely on phone compatibility, so exact feature access can vary by device, language and setup.
Q: Is the water resistance suitable for pool swimming and showers?
A: Yes. Fitbit Sense 2 is water resistant to 50m, so it suits pool swimming and everyday water exposure. It is not positioned as a dive watch, so deeper water activities and high-pressure water use are outside its intended use.
Q: Does Sense 2 support lots of apps like a full smartwatch?
A: No. Fitbit Sense 2 focuses more on health tracking, notifications, calls and selected Google and Alexa features than on a broad app catalogue. It suits buyers who want key smartwatch functions, not heavy third-party app customisation.