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Fitbit Sense 2 Lunar White/Platinum Aluminium
FB521SRWT-FRCJK
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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.
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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 wellness-focused fitness tracker for people who want strong everyday health insights without moving to a bulky smartwatch. It stands out with stress tracking, sleep analysis, heart rate monitoring and built-in GPS in a light, comfortable design. It suits most daily users well, but dedicated athletes may want a more training-focused watch with broader sports and performance metrics.
What it’s great for
- Everyday Health Tracking
- Sleep Monitoring
- Stress Management
- Daily Activity Tracking
- Walking and Running
- Swim Tracking
Where it works best
- Everyday Wear
- Home
- Gym
- Outdoors
- Commute
- Pool
Who it’s for
- Health-Conscious Adult
- Everyday Exerciser
- Beginner Fitness User
- Wellness-Focused User
- Busy Professional
Things to consider
It is stronger for general wellness and lifestyle tracking than for advanced athletic training, so serious runners or multisport users may prefer a more sport-specialised watch.
Beginner vs athlete fit
7/10 - excellent for beginners and everyday exercisers, but less specialised for performance-focused athletes
Health monitoring depth
9/10 - strong wellness coverage with heart rate, sleep, stress, skin conductance and oxygen saturation sensors
Smartphone compatibility
Apple iOS 16.4 or higher, Android 11.0 or higher
Battery endurance rating
7/10 - suitable for daily wear and overnight tracking, but not positioned as an extended-endurance tracker
Water resistance score
8/10 - 50 m water resistance supports swimming and everyday water exposure
Key benefits
- Stress Tracking: Helps users identify stress patterns and build better daily recovery habits.
- Sleep Tracking: Gives detailed overnight insights including sleep stages to help improve rest quality.
- Heart Rate Monitoring: Tracks heart rate continuously for day-to-day wellness visibility and exercise support.
- Built-in GPS and GLONASS: Records outdoor workout routes and pace without needing to carry a phone.
- AMOLED Display: Delivers clear, easy-to-read visuals for notifications, workouts and health data.
- 50 m Water Resistance: Suitable for swim tracking and everyday wear around water.
- Lightweight Design: Comfortable enough for all-day use and overnight sleep tracking.
- Smartphone Alerts and Voice Assistant Support: Adds everyday convenience with message alerts, call alerts and voice help from the wrist.
Q: Can Sense 2 track runs without carrying your phone?
A: Yes. Fitbit Sense 2 has built-in GPS and GLONASS, so it can record outdoor route data during runs or walks without using your phone's location. Phone pairing is still needed for syncing data, notifications and other connected features.
Q: Does this Fitbit let you answer calls from your wrist?
A: No. Fitbit Sense 2 supports call and message alerts on the watch, so you can see incoming activity without pulling out your phone. It is sold with notifications rather than as a phone replacement for taking calls directly from the watch.
Q: Which phones work with the Fitbit Sense 2?
A: Fitbit Sense 2 works with Apple iOS 16.4 or higher and Android 11.0 or higher. That means older phones on earlier software may pair poorly or miss features, so checking your phone's current operating system version matters before buying.
Q: Will the band fit smaller wrists as well as larger ones?
A: Yes. The included band fits wrists from 5.1 to 8.6 inches, which covers a broad range for daily wear and overnight tracking. If you prefer a very loose or very tight fit, comfort will still depend on how you like the watch to sit.
Q: Is it suitable for pool swims and everyday water exposure?
A: Yes. Fitbit Sense 2 is water resistant to 50m and supports swim tracking, so it suits pool sessions and everyday wear around water. Water resistance is not the same as pressure-proofing for every activity, so keep use to normal swimming conditions.
Q: Can you use Google Wallet and Alexa on this watch?
A: Yes. Fitbit Sense 2 supports Google Wallet for payments and Alexa voice assistant features in a watch format. Both are connected features, so they depend on a compatible phone and account setup rather than working as fully standalone tools.