OVERALL
ALTERNATIVES
SPECS
VS AVERAGE
REVIEWS
Scored using Smartwatches Methodology v3.0
Smartwatches Methodology v3.0
Mathematical & Unbiased Scoring
Products in this category are scored under Frontum Smartwatches Methodology v3.0: the technical score from the specifications is the base, and independent expert and video reviews (up to ±0.5 points), owner opinions (up to ±0.3) and best-of lists (up to +0.3) move it up or down.
Explore Smartwatches Methodology v3.0

Xiaomi Watch S2 review: 127 specs compared

Avg. price:~£180Screen size:?Battery life:12 daysDisplay type:AMOLED

Xiaomi Watch S2 Review: Compare 127 technical specifications to see how this product ranks in the Smartwatches category and whether it is worth buying.

Xiaomi Watch S2
7.4/10

Overall score

Score
7.4/ 10
✕
What it is
Our main score for this model, 1–10. It combines specs, best-of lists, expert reviews and owners.
How we count it
Parts: Technical score 35%, List score 30%, Reviews score 25%, Sentiment score 10%
Marks: Each part gets a mark out of 10. For reviews, lists and owners, a typical model in this category gets about 8 and the best one gets 10.
No data yet: A part with no data shows "?". It counts as the mark of a weaker model in this category (4 in 5 models with data score higher). This way, models with reviews, lists and owners usually come out ahead.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 63% of models
Score components

35%

7.6

Technical score

30%

?

List scoreNot enough data yet, so we use 7.5, the mark of a weaker model in this category

25%

?

Reviews scoreNot enough data yet, so we use 7.4, the mark of a weaker model in this category

10%

6.5

Sentiment score

â–²Better than 63% of smartwatches
8.1

Value for money

Value for money
8.1/ 10
✕
What it is
An indicator that combines the smartwatch's overall rating with its cost.
When it matters
When you are looking for a smartwatch with a good balance between quality and price.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 66% of models
Score components

70%

7.4

Overall score

30%

9.6

Price

â–²Better than 66%
7.6

Technical score

Technical score
7.6/ 10
✕
What it is
How good the specs are compared with the other models in this category, 1–10.
How we count it
Areas: We rate the specs in each area against the other models in this category.
Weighting: The areas that matter most to buyers count more. The shares are shown under Score components.
Share: The technical score is 35% of the overall score.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 73% of models
Score components

24%

5.9

Health

21%

9.1

Fitness

16%

8.5

Battery

14%

7.9

Smart features

12%

6.2

Connectivity

9%

7.8

Display & Design

4%

8.4

Hardware

â–²Better than 73%
?

Reviews score

Reviews score
✕
What it is
Average grade from independent test sites, magazines and video reviewers, 1–10.
How we count it
Grades: Each review's own score is converted to 1–10; without one, we grade the review ourselves. Every review counts the same: written or video, short or full test.
Score: The average grade is 80% of the review mark; the number of reviews is the other 20% (1 review = 5, the typical number in this category = 8, the most-reviewed model = 10).
Enough data: With few reviews, the average grade is pulled toward the typical grade of this category. No reviews yet: 7.4 for now.
Share: Reviews count 25% of the overall score.
Score distribution
â–¼
<55-66-77-88-99-10
Grades by review (0)
We have not found an independent test of this model yet. Until we do, its review part counts as 7.4.
User ratings collected online are not part of this score.
No expert tests yet
?

List score

List score
7.5/ 10
✕
What it is
How often independent test sites, magazines and video reviewers put this model in their best-of lists for this category.
How we count it
Points: The model in the most lists of this category gets 10; the others get 8 to 10 in proportion. In no list yet: 7.5. Lists count 30% of the overall score.
Enough data: Every list counts, even a single one. With fewer than 5 best-of lists in the category, this part is left out.
Lists with this model (0)
Not in any best-of list yet, so this part counts as 7.5. Models in a list get 8 to 10.
Not in any best-of list yet
  • xiaomi-watch-s2
xiaomi-watch-s2
Where to buy
    N/A~ £180
Best rankings
Available: ranking among products currently available (including other versions of this product).All: ranking among all products in the database.
Loading category ranking...

Technical Specifications of smartwatch Xiaomi Watch S2

Technical score
Technical score
7.6/ 10
✕
What it is
How good the specs are compared with the other models in this category, 1–10.
How we count it
Areas: We rate the specs in each area against the other models in this category.
Weighting: The areas that matter most to buyers count more. The shares are shown under Score components.
Share: The technical score is 35% of the overall score.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 73% of models
Score components:

24%

5.9

Health

21%

9.1

Fitness

16%

8.5

Battery

14%

7.9

Smart features

12%

6.2

Connectivity

9%

7.8

Display & Design

4%

8.4

Hardware

7.6
Reviews score
7.4
List score
?
Value for money
Value for money
8.1/ 10
✕
What it is
An indicator that combines the smartwatch's overall rating with its cost.
When it matters
When you are looking for a smartwatch with a good balance between quality and price.
Score distribution
â–¼
<55-66-77-88-99-10
â–² Better than 66% of models
Score components:

70%

7.4

Overall score

30%

9.6

Price

8.1
Heart rate monitor
yes
This smartwatch includes a heart rate monitor. 9.5% of smartwatches include a heart rate monitor.
Blood oxygen monitoring
yes
This smartwatch supports blood oxygen monitoring. 30.4% of smartwatches support blood oxygen monitoring.
ECG
no
This smartwatch does not support ECG. 18.2% of smartwatches support ECG.
Irregular heart rate warnings
yes
This smartwatch supports irregular heart rate warnings. 49.5% of smartwatches support irregular heart rate warnings.
HRV tracking
no
This smartwatch does not support HRV tracking. 45.2% of smartwatches support HRV tracking.
Show more
Accelerometer
yes
This smartwatch includes an accelerometer. 0.5% of smartwatches include an accelerometer.
Barometer
yes
This smartwatch includes a barometer. 46.5% of smartwatches include a barometer.
Gyroscope
yes
This smartwatch includes a gyroscope. 28.9% of smartwatches include a gyroscope.
Cadence sensor
no
This smartwatch does not include a cadence sensor. 32.9% of smartwatches include a cadence sensor.
Distance tracking
yes
This smartwatch supports distance tracking. 3.7% of smartwatches support distance tracking.
Show more
Battery life
12 days
Market range: <1 day – >20 days
This smartwatch lasts 12 days on a charge, which is longer than 68.3% of Smartwatches and the same as 4.3% of Smartwatches.
Battery life in training mode
50 h
Market range: <6 h – >48 h
This smartwatch records workouts for 50 h on a charge, which is longer than 91.5% of Smartwatches and the same as 2% of Smartwatches.
Battery life with GPS on
30 h
Market range: <6 h – >46 h
This smartwatch lasts 30 h with GPS on, which is longer than 68.4% of Smartwatches and the same as 5.7% of Smartwatches.
Battery power
500 mAh
Market range: <200 mAh – >500 mAh
This smartwatch has a 500 mAh battery, which is larger than 89.8% of Smartwatches and the same as 2.2% of Smartwatches.
Charge time
85 min
Market range: <60 min – >150 min
This smartwatch charges from empty in 85 min, which is quicker than 74.5% of Smartwatches and the same as 0.8% of Smartwatches.
Show more
Operating system
MIUI Watch OS
This smartwatch runs MIUI Watch OS, which is more advanced than the system in 50.1% of Smartwatches and equal to 0.3% of Smartwatches.
Software update frequency
?
Third-party app support
yes
This smartwatch supports third-party apps. 48.5% of smartwatches support third-party apps.
Support is limited to official app stores/approved app selection.
Notifications
yes
This smartwatch supports notifications. 0.3% of smartwatches support notifications.
Voice assistant support
yes
This smartwatch supports voice assistants. 30.8% of smartwatches support voice assistants.
Show more
Cellular module
no
This smartwatch does not include a cellular module. 16.7% of smartwatches include a cellular module.
SIM cards
0
GPS
yes
This smartwatch supports GPS. 40.3% of smartwatches support GPS.
Galileo support
yes
This smartwatch supports Galileo navigation. 56.5% of smartwatches support Galileo navigation.
Dual-frequency GPS
no
This smartwatch does not support dual-frequency GPS. 15.1% of Smartwatches offer this.
Show more
Screen size
?
Display type
AMOLED
This smartwatch uses AMOLED, which is more advanced than the screen in 46.9% of Smartwatches and equal to 53.1% of Smartwatches.
Resolution
466x 466
This smartwatch has a display resolution of 466x466 which is higher than that of 84.3% of smartwatches and equal to that of 13.2% of smartwatches.
Pixel density
326 ppi
Market range: <213 ppi – >461 ppi
This smartwatch has a pixel density of 326 ppi, which is higher than 45% of Smartwatches and equal to 8.7% of Smartwatches.
Display brightness
600 nits
Market range: <450 nits – >2k nits
This smartwatch has a screen brightness of 600 nits, which is lower than 52.5% of Smartwatches and equal to 13.1% of Smartwatches.
Show more
CPU speed
0.022 GHz
This smartwatch uses a CPU configuration of 0.022 GHz which is slower than that in 98.8% of smartwatches and equal to that in 1.2% of smartwatches.
Processor model
?
RAM
?
Internal storage
32 GB
Market range: <0 GB – >32 GB
This smartwatch has 32 GB of internal storage, which is more than 81.3% of Smartwatches and equal to 15% of Smartwatches.
External memory slot
no
This smartwatch does not include an external memory slot. 0.3% of smartwatches include an external memory slot.
Show more

Xiaomi Watch S2 vs the average smartwatch

246810TotalHealthFitnessBatteryConnectivityDisplay & DesignSmart featuresHardware
  • Temperature sensing
    This smartwatch includes a temperature sensor, the average smartwatch does not. 31.9% of smartwatches include a temperature sensor.
  • 30 h longer training battery life
    This smartwatch lasts longer in training mode than the average smartwatch (50 h vs 20 h). The average smartwatch lasts 20 h in training mode.
    50 h vs 20 h
  • Stronger display glass
    This smartwatch uses sapphire display glass, while the average smartwatch uses mineral glass.
    sapphire vs mineral glass
  • Emergency SOS
    This smartwatch includes Emergency SOS, the average smartwatch does not. 44.8% of smartwatches include Emergency SOS.
  • Supports wireless charging
    This smartwatch supports wireless charging, the average smartwatch does not. 23.4% of smartwatches support wireless charging.
  • NFC functionality
    This smartwatch supports NFC, the average smartwatch does not. 45.2% of smartwatches support NFC.
    NFC hardware is present, but functionality may be limited by region/app support.
  • 35 min quicker charging
    This smartwatch charges faster than the average smartwatch (85 min vs 120 min). The average smartwatch takes 120 min to charge from empty.
    85 min vs 120 min
  • 5 days longer battery life
    This smartwatch runs longer per charge than the average smartwatch (12 days vs 7 days). The average smartwatch runs for 7 days on a charge.
    12 days vs 7 days
  • Temperature sensing
    This smartwatch includes a temperature sensor, the average smartwatch does not. 31.9% of smartwatches include a temperature sensor.
  • Weight tracking
    This smartwatch supports weight tracking, the average smartwatch does not. 41.9% of smartwatches support weight tracking.
  • External heart rate monitor support
    This smartwatch supports external heart rate monitor compatibility, the average smartwatch does not. 46.6% of smartwatches support external heart rate monitor compatibility.
  • 19 more exercise types
    This smartwatch includes more exercise types than the average smartwatch (109 vs 90). The average smartwatch includes 90 exercise types.
    Reported as at least 109 exercise modes.
    109 vs 90
  • 30 h longer training battery life
    This smartwatch lasts longer in training mode than the average smartwatch (50 h vs 20 h). The average smartwatch lasts 20 h in training mode.
    50 h vs 20 h
  • Supports wireless charging
    This smartwatch supports wireless charging, the average smartwatch does not. 23.4% of smartwatches support wireless charging.
  • 35 min quicker charging
    This smartwatch charges faster than the average smartwatch (85 min vs 120 min). The average smartwatch takes 120 min to charge from empty.
    85 min vs 120 min
  • 5 days longer battery life
    This smartwatch runs longer per charge than the average smartwatch (12 days vs 7 days). The average smartwatch runs for 7 days on a charge.
    12 days vs 7 days
  • 195 mAh larger battery capacity
    This smartwatch has a larger battery than the average smartwatch (500 mAh vs 305 mAh). The average smartwatch has a 305 mAh battery.
    500 mAh vs 305 mAh
  • 9 h longer GPS battery life
    This smartwatch lasts longer with GPS on than the average smartwatch (30 h vs 21 h). The average smartwatch lasts 21 h with GPS on.
    30 h vs 21 h
  • NFC functionality
    This smartwatch supports NFC, the average smartwatch does not. 45.2% of smartwatches support NFC.
    NFC hardware is present, but functionality may be limited by region/app support.
  • Galileo satellite support
    This smartwatch supports Galileo navigation, the average smartwatch does not. 43.6% of smartwatches support Galileo navigation.
  • More current Bluetooth version
    This smartwatch uses a more current Bluetooth version than the average smartwatch (5.2 vs 5).
    5.2 vs 5
  • Stronger display glass
    This smartwatch uses sapphire display glass, while the average smartwatch uses mineral glass.
    sapphire vs mineral glass
  • Higher resolution
    This smartwatch has a display resolution of 466x466, while the average smartwatch reaches 360x360.
    466x466 vs 360x360
  • 1 mm slimmer
    This smartwatch is slimmer than the average smartwatch (10.7 mm vs 11.7 mm). The average smartwatch is 11.7 mm thick.
    10.7 mm vs 11.7 mm
  • Better case material
    This smartwatch uses stainless steel for the case material, while the average smartwatch uses polycarbonate.
    stainless steel vs polycarbonate
  • 8.2 g lighter
    This smartwatch is lighter than the average smartwatch (36.8 g vs 45 g). The average smartwatch weighs 45 g.
    36.8 g vs 45 g
  • Better band material
    This smartwatch uses silicone, leather for the band material, while the average smartwatch uses silicone.
    Band material varies by version.
    silicone, leather vs silicone
  • Emergency SOS
    This smartwatch includes Emergency SOS, the average smartwatch does not. 44.8% of smartwatches include Emergency SOS.
  • More advanced operating system
    This smartwatch runs a more advanced operating system than the average smartwatch (MIUI Watch OS vs Proprietary OS).
    MIUI Watch OS vs Proprietary OS
  • 8x more internal storage
    This smartwatch has more internal storage than the average smartwatch (32 GB vs 4 GB). The average smartwatch has 4 GB of internal storage.
    32 GB vs 4 GB
  • No VO2 max measurement
    This smartwatch does not measure VO2 max, the average smartwatch does. 51.3% of smartwatches measure VO2 max.
  • No multi-sport mode
    This smartwatch does not include a multi-sport mode, the average smartwatch does. 71.7% of smartwatches include a multi-sport mode.
  • No smart scale support
    This smartwatch does not support smart scale compatibility, the average smartwatch does. 57.1% of smartwatches support smart scale compatibility.
  • 13.3% lower sentiment score
    6.5 vs 7.5
  • 150 nits dimmer screen
    This smartwatch has a dimmer screen than the average smartwatch (600 nits vs 750 nits). The average smartwatch peaks at 750 nits.
    600 nits vs 750 nits
  • Slower CPU speed
    This smartwatch uses a CPU configuration of 0.022 GHz, while the average smartwatch uses 1 GHz.
    0.022 GHz vs 1 GHz
  • 3.5 mm wider case
    This smartwatch has a wider case than the average smartwatch (46 mm vs 42.5 mm). The average smartwatch measures 42.5 mm across.
    46 mm vs 42.5 mm
  • 63.6% more expensive
    Xiaomi Watch S2 is more expensive than the average smartwatch (£180 vs £110).
    £180 vs £110
  • 13.3% lower sentiment score
    6.5 vs 7.5
  • 63.6% more expensive
    Xiaomi Watch S2 is more expensive than the average smartwatch (£180 vs £110).
    £180 vs £110
  • No VO2 max measurement
    This smartwatch does not measure VO2 max, the average smartwatch does. 51.3% of smartwatches measure VO2 max.
  • No smart scale support
    This smartwatch does not support smart scale compatibility, the average smartwatch does. 57.1% of smartwatches support smart scale compatibility.
  • No multi-sport mode
    This smartwatch does not include a multi-sport mode, the average smartwatch does. 71.7% of smartwatches include a multi-sport mode.
  • 150 nits dimmer screen
    This smartwatch has a dimmer screen than the average smartwatch (600 nits vs 750 nits). The average smartwatch peaks at 750 nits.
    600 nits vs 750 nits
  • 3.5 mm wider case
    This smartwatch has a wider case than the average smartwatch (46 mm vs 42.5 mm). The average smartwatch measures 42.5 mm across.
    46 mm vs 42.5 mm
  • Slower CPU speed
    This smartwatch uses a CPU configuration of 0.022 GHz, while the average smartwatch uses 1 GHz.
    0.022 GHz vs 1 GHz

Video reviews

Hands-on testing, unboxing, and real-world video evaluations

Shop video
Overview video

Third-party reviews

What customers like about Xiaomi Watch S2

  • Premium and attractive stainless steel design that works for any occasion
  • Vibrant and high-resolution AMOLED display with excellent clarity
  • Lightweight and comfortable for all-day wear
  • Fast and accurate GPS performance for outdoor activity tracking
  • Good value for money compared to other premium smartwatches
  • Support for useful features like NFC payments and answering calls directly from the watch

What customers don't like about Xiaomi Watch S2

  • Unreliable and inaccurate health metrics, particularly sleep tracking and heart rate data
  • Disappointing battery life that often falls short of the advertised duration, requiring daily or near-daily charging
  • Primitive or cluttered companion app that lacks depth and intuitive navigation
  • Lack of long-term software support and updates from Xiaomi
  • Reported software issues such as occasional freezing and sluggishness
  • Limited global availability compared to other Xiaomi wearable lines

Verdict

The Xiaomi Watch S2 is a premium smartwatch available in 42mm and 46mm sizes, featuring a circular AMOLED display (1.32" or 1.43") with a 466x466 resolution, 600 nits brightness, and sapphire glass protection. Built with a durable stainless steel frame, it introduces a bioelectrical impedance sensor for body composition analysis alongside standard heart rate, SpO2, sleep, and skin temperature monitoring. Key advantages include its elegant design, dual-frequency GNSS for precise tracking, Bluetooth calling via an integrated mic and speaker, and a long-lasting battery providing up to 12 days of use on the larger model. However, notable drawbacks include its limited availability outside of China, a lack of Wear OS resulting in restricted third-party app support, and an oversized profile that may not suit smaller wrists.

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