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Fitbit Sense 2 Lunar White/Platinum Aluminium
FB521SRWT-FRCJK
$445
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Product Overview
Key Features
- Smart watch with 1.58 Inch AMOLED display
- 24/7 heart rate, ECG app, SpO2, 40+ exercise modes
- Up to 6 plus days battery life, fast charging
- Bluetooth 5.0, water resistant, GPS, sleep tracker
Key Specifications
- Brand:
- Fitbit
- Model Number:
- FB521SRWT-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
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:
- White
- Supplier Colour:
- Luna White/Platinum
- Band Colour:
- White
- 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
Power & Charging
- Battery Life:
- Up to 6+ Days
Audio
- Audio:
- 75dB SPL 10cm Speaker & Microphone
General Information
- Type:
- Smart Watch
- Family:
- Sense 2
- Colour:
- White
- Supplier Colour:
- Luna White/Platinum
- Band Colour:
- White
- 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 Lunar White/Platinum Aluminium
Overall Rating Snapshot
4.5 out of 5 stars from 10 reviews
100% of users recommend this product
What customers say, summarised by AI
- Tracks heart rate, sleep, steps, calories and hydration in detail
- Helpful insights and reminders for healthier lifestyle habits
- Vibrant display and sleek, modern design suit daily wear
- Customisable watch faces and easy-to-use interface
- Compatible with Apple and Android for message and call alerts
- Some users experience skin irritation from the silicone band
Pros
Value (1)
Lifespan (1)
Easy (1)
Upgraded from the Versa 4
Exactly the same as my Versa 4, just with extra features. Well worth it
Jen Hentscher
Confirmed purchase 30 March 2026
Published on 21 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.
Handy Features
Not a bad smart watch
Lachlan
Confirmed purchase 14 February 2025
Published on 14 March 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 Lunar
Fantastic for time And counting steps and heart rate and sleeping pattern
Haze
Confirmed purchase 25 November 2024
Published on 29 December 2024
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.
My wife had on older one and dropped it and it was no longer usable. Because it was a great product we purchased a newer model
Steve. Dicker
Confirmed purchase 19 October 2023
Published on 3 November 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.
I like it
Fantastic watch for me to help monitor my health problems and trend towards a fitter life
James Henderson
Confirmed purchase 12 June 2023
Published on 3 August 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.
Excellent product
Light and colorful
Carlo
Confirmed purchase 17 February 2023
Published on 19 May 2023
Yes, I recommend this product.
Check out what this reviewer thought after the first 3-6 months.
Awesome features
So many features, sleep, heartbeat and step and calories you burn and how my phone notifications show on my Fitbit sense 2, and the display is so vibrant and easy to read.
Berni
Confirmed purchase 9 November 2022
Published on 8 February 2023
Yes, I recommend this product.
Check out what this reviewer thought after the first 3-6 months.
Fitbit sense 2
the watch itself is great, this is the first fitbit I have owned and like to bigger face and available data on the screen. The ability to change the face layout to suit my needs was also a great idea. I liked it so much I brought one for my daughter too for christmas. I only gave it 4 stars as the band has caused alot of irritation on the inner wrist, not the watch and this has been disappointing. Have ordered new bands online to help reduce reactions to the elastomers in this watch band
Kim
Confirmed purchase 18 October 2022
Published on 17 January 2023
Yes, I recommend this product.
Check out what this reviewer thought after the first 3-6 months.
Functional and practical for everyday
Its a good product, take a bit to get use to the band but other than that been great so far
Jess
Confirmed purchase 8 December 2022
Published on 27 December 2022
Yes, I recommend this product.
This customer is a verified purchaser who may have received an incentive in return for providing an authentic review.
Amazing smart watch
As someone who has never owned a Fitbit or smartwatch, the Fitbit Sense 2 certainly lives up to expectations! With all the functionality of a fitness tracker, the watch is also compatible with both apple and android phones, allowing you to see messages and answer phone call. The 6 month free membership also allows you to experience the watch at its optimal performance. The design is sleek and very similar to the apple watches. The lunar white and aluminium colour palette is classic and timeless. Absolutely love this watch!
Michelle
Confirmed purchase 5 October 2022
Published on 6 November 2022
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 10 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 fitness tracker for people who want deeper health insights, stress tracking, sleep guidance and useful smartwatch features in one lightweight wearable. It suits everyday wellness users more than serious athletes, with strong heart, sleep and stress tools. One limitation is that its training and sport-focused performance features are less specialised than dedicated sports watches.
What it’s great for
- Daily Health Tracking
- Stress Management
- Sleep Monitoring
- General Fitness
- Smartwatch Convenience
Where it works best
- Home
- Office
- Gym
- Walking Routes
- Everyday Commuting
Who it’s for
- Health-Conscious Adult
- Busy Professional
- Everyday Exerciser
- Sleep-Focused User
- Wellness Tracker User
Things to consider
While it offers strong wellness and smartwatch features, it is not as sport- and training-focused as specialist GPS sports watches for serious endurance athletes.
Beginner vs athlete fit
Best for beginners to intermediate fitness users and wellness-focused wearers rather than performance-first athletes
Health monitoring depth
9/10 - strong stress, sleep, heart rhythm, HRV and SpO2 tools for broad everyday wellness tracking
Smartphone compatibility
Compatible with smartphones for notifications, Bluetooth calls and texts, Alexa support, Google Maps and Google Wallet
Battery endurance rating
7/10 - suited to daily and overnight use, but power users may find specialist long-battery sports watches last longer
Water resistance score
7/10 - suitable for everyday wear and fitness use, though this listing does not provide detailed water-resistance use cases
Key benefits
- Continuous EDA Sensor: Helps identify signs of stress during the day so you can respond with guided breathing, exercise or mindfulness tools.
- cEDA Body Response Tracking: Gives more context around moments of stress, excitement or stimulant response so you can better understand daily triggers.
- Sleep Profile and Sleep Tracking: Provides deeper sleep insights and monthly analysis to help you build better sleep habits over time.
- Heart Health Monitoring: Tracks heart rate variability and supports ECG rhythm checks for broader day-to-day heart wellness awareness.
- SpO2 Monitoring: Lets you view blood oxygen trends to add another layer to overnight and overall wellness tracking.
- Lightweight Thin Design: Sits comfortably on the wrist for all-day wear, workouts and overnight sleep tracking.
- Bluetooth Calls and Texts: Keeps key communication tools accessible from your wrist when your phone is nearby.
- Google Maps and Google Wallet Support: Adds convenient navigation and tap-and-go payment functionality for everyday use.
Q: Can I make Bluetooth calls and texts without carrying my phone?
A: No. Fitbit Sense 2 handles calls, texts and notifications as smartphone features over Bluetooth, so your phone generally needs to be nearby. It is built for wrist access to key updates, not as a fully independent mobile watch.
Q: Is Fitbit Sense 2 suited to serious training or everyday fitness?
A: Fitbit Sense 2 is better suited to everyday fitness and wellness tracking than performance-first training.
Q: Does the ECG app replace a medical check or diagnosis?
A: No. Fitbit Sense 2 can record heart rhythm data through the ECG app, but it does not replace professional assessment or emergency care. Treat it as a monitoring feature that adds context to your wellness tracking, rather than a standalone medical answer.
Q: How useful are the stress sensors in day-to-day wear?
A: Fitbit Sense 2 uses continuous EDA and cEDA sensors to flag body responses linked with stress and similar triggers during the day. It is most useful for spotting patterns and prompting breathing or exercise tools, rather than explaining the exact cause of each alert.
Q: Are Google Maps, Wallet and Alexa available in every setup?
A: Google Maps, Google Wallet and Alexa support are available on Fitbit Sense 2, but not every feature is universal. App availability can vary by country, language and voice assistant support, so the exact mix on your watch depends on your phone setup and region.