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Fitbit Sense 2 Lunar White/Platinum Aluminium
FB521SRWT-FRCJK
$445
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Participating Credit Cards. 6 Months Interest Free.
No Interest. No Deposit. Monthly payments required.
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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 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 is a premium fitness tracker smartwatch for people who want strong health insights, stress tracking and sleep guidance in one comfortable everyday wearable. It suits wellness-focused users who also want calls, texts and navigation on the wrist. Key strengths are its health monitoring depth and stress features. One limitation is that some advanced experiences depend on app support or Premium services.
What it’s great for
- Stress tracking
- Sleep improvement
- Everyday wellness monitoring
- Heart health insights
- Daily activity tracking
- Smartwatch convenience
Where it works best
- Home
- Gym
- Walking tracks
- Office
- Commutes
- Everyday wear
Who it’s for
- Health-conscious adult
- Everyday exerciser
- Busy professional
- Sleep-focused user
- Wellness beginner
- Fitbit ecosystem user
Things to consider
It focuses more on wellness and lifestyle tracking than specialist sports training, so serious athletes may prefer a more performance-focused watch.
Beginner vs athlete fit
Best for beginners to intermediate users focused on health, sleep and everyday fitness rather than advanced athletic training
Health monitoring depth
9/10 - strong health and wellness coverage with stress tracking, sleep analysis, SpO2, HRV and ECG support
Smartphone compatibility
Works best with compatible smartphones through the Fitbit app, with support for notifications, calls, texts and selected Google services
Battery endurance rating
7/10 - suited to everyday multi-day use, but smartwatch features and health tracking can reduce runtime compared with simpler bands
Water resistance score
8/10 - suitable for everyday wear and fitness use around water, though not positioned as a specialist dive device
Key benefits
- Continuous EDA Sensor: Helps identify signs of stress during the day so you can respond with breathing sessions, movement or other calming habits.
- Sleep Profile: Gives monthly sleep insights and patterns to help you understand where your rest can improve.
- Sleep Stages and Sleep Score: Shows light, deep and REM sleep data in an easy-to-follow format for better nightly recovery awareness.
- Heart Health Tracking: Monitors heart rate variability and supports ECG heart rhythm checks for broader wellness awareness.
- SpO2 Monitoring: Lets you keep an eye on blood oxygen trends as part of your overall health picture.
- Lightweight Thin Design: Sits comfortably on the wrist for all-day wear, workouts and overnight sleep tracking.
- Bluetooth Calls and Texts: Brings key phone communication to your wrist so it is easier to stay connected while moving.
- Google Maps and Wallet Support: Adds practical day-to-day convenience for navigation and tap-and-go style payments from the watch.
Q: How is the Fitbit Sense 2 different from the Fitbit Versa 4?
A: The Sense 2 adds advanced health sensors that the Versa 4 does not, including ECG and continuous EDA stress tracking. Both cover fitness, sleep and heart rate, but the Sense 2 is the better fit if deeper wellness insights matter.
Q: Do I need to keep my phone with me to use the Fitbit Sense 2?
A: No, core tracking such as steps, heart rate, sleep and stress sensing works on the watch itself. A compatible smartphone is still needed for setup, syncing detailed reports and features such as calls, texts and voice assistant access.
Q: Can I use an older Fitbit charger with the Sense 2?
A: Only if it is the charger made for Fitbit Sense 2 or Versa 4. Chargers from Sense, Versa 3, Versa 2 and most earlier Fitbit watches use different connector shapes, so they are not a reliable fit for this model.
Q: Are the ECG, SpO2 and stress features on the Sense 2 medical tools?
A: No, these features are for personal wellness tracking, not diagnosis or emergency monitoring. They can help you notice trends in heart rhythm, blood oxygen and stress, but they should not replace medical advice or urgent care.
Q: What does the model code FB521SRWT-FRCJK mean on this Fitbit?
A: It identifies this specific Fitbit Sense 2 in Lunar White with a Platinum aluminium case. Using the full code helps confirm you are choosing this exact version, not a similar-looking Fitbit model or a different colour in the range.
Q: How does the Fitbit Sense 2 track stress during the day?
A: It uses a continuous EDA sensor to look for body responses linked to stress, excitement or stimulants such as caffeine. When your patterns change, the watch can send prompts and suggest tools like breathing sessions or exercise.