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 S4 Sport review: 127 specs compared

Avg. price:~£200Screen size:1.43 inchBattery life:15 daysDisplay type:AMOLED

Xiaomi Watch S4 Sport Review: Compare 127 technical specifications and 3 expert and video reviews to see how this product ranks in the Smartwatches category and whether it is worth buying.

Xiaomi Watch S4 Sport
7.7/10

Overall score

Score
7.7/ 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 73% of models
Score components

35%

8.4

Technical score

30%

?

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

25%

7.4

Reviews score

10%

?

Sentiment scoreNot enough data yet, so we use 6.8, the mark of a weaker model in this category

â–²Better than 73% of smartwatches
8.2

Value for money

Value for money
8.2/ 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 71% of models
Score components

70%

7.7

Overall score

30%

9.5

Price

â–²Better than 71%
8.4

Technical score

Technical score
8.4/ 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
★ Better than 95% of models
Score components

24%

7.6

Health

21%

9.4

Fitness

16%

7.8

Battery

14%

8.7

Smart features

12%

8.8

Connectivity

9%

9.0

Display & Design

4%

8.0

Hardware

★Better than 95%
7.4

Reviews score

Reviews score
7.4/ 10
✕
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
â–¼ Worse than 55% of models

80%

7.7

Average grade

20%

6.1

Popularity

Grades by review (3)
3 videos, average 7.0/10. We use 5 reviews; the 2 missing count as the category's typical 8.0: (7.0 × 3 + 8.0 × 2) ÷ 5 = 7.4. Reviews count 25% of the overall score.
User ratings collected online are not part of this score.
â–¼Worse than 55%
?

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-s4-sport
xiaomi-watch-s4-sport
Where to buy
    N/A~ £200
Best rankings
Available: ranking among products currently available (including other versions of this product).All: ranking among all products in the database.

What reviewers say about the Xiaomi Watch S4 Sport

Based on 1 · 3

Reviewers praise the long battery life, the display and the solid design, with no real complaints so far.
Praised
Pick a topic to see who said what
Loading category ranking...

Technical Specifications of smartwatch Xiaomi Watch S4 Sport

Technical score
Technical score
8.4/ 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
★ Better than 95% of models
Score components:

24%

7.6

Health

21%

9.4

Fitness

16%

7.8

Battery

14%

8.7

Smart features

12%

8.8

Connectivity

9%

9.0

Display & Design

4%

8.0

Hardware

8.4
Reviews score
7.4
List score
?
Value for money
Value for money
8.2/ 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 71% of models
Score components:

70%

7.7

Overall score

30%

9.5

Price

8.2
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.
Supports abnormal high/low heart-rate alerts (typically after inactivity).
HRV tracking
yes
This smartwatch supports HRV tracking. 54.9% 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
15 days
Market range: <1 day – >20 days
This smartwatch lasts 15 days on a charge, which is longer than 83% of Smartwatches and the same as 3.9% of Smartwatches.
Battery life in training mode
26 h
Market range: <6 h – >48 h
This smartwatch records workouts for 26 h on a charge, which is longer than 63.6% of Smartwatches and the same as 2% of Smartwatches.
Battery life with GPS on
?
Battery power
453 mAh
Market range: <200 mAh – >500 mAh
This smartwatch has a 453 mAh battery, which is larger than 81.2% of Smartwatches and the same as 0.3% of Smartwatches.
Charge time
?
Show more
What reviewers say
Operating system
HyperOS
This smartwatch runs HyperOS, which is more advanced than the system in 57% of Smartwatches and equal to 1.7% of Smartwatches.
Software update frequency
occasional
This smartwatch has occasional software update support which is more active than that of 54% of smartwatches and equal to that of 40.2% of smartwatches.
Updates are typically released about every 3 months.
Third-party app support
no
This smartwatch does not support third-party apps. 51.6% of smartwatches support third-party apps.
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
yes
This smartwatch includes a cellular module. 83.5% of smartwatches include a cellular module.
SIM cards
1
Market range: <0 – >5
This smartwatch uses 1 for cellular connectivity which is more advanced than that of 2% of smartwatches and the same as that of 98% of smartwatches.
eSIM
GPS
yes
This smartwatch supports GPS. 40.3% of smartwatches support GPS.
Galileo support
no
This smartwatch does not support Galileo navigation. 43.6% of smartwatches support Galileo navigation.
Dual-frequency GPS
?
Show more
Screen size
1.43 inch
Market range: <1.2 inch – >1.83 inch
This smartwatch has a 1.43 inch screen, which is larger than 56.3% of Smartwatches and the same as 8.6% of Smartwatches.
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
461 ppi
Market range: <213 ppi – >461 ppi
This smartwatch has a pixel density of 461 ppi, which is higher than 85% of Smartwatches and equal to 6.6% of Smartwatches.
Display brightness
2,200 nits
Market range: <450 nits – >2k nits
This smartwatch has a screen brightness of 2,200 nits, which is higher than 91.7% of Smartwatches and equal to 0.8% of Smartwatches.
Show more
What reviewers say
CPU speed
?
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 S4 Sport vs the average smartwatch

246810TotalHealthFitnessBatteryConnectivityDisplay & DesignSmart featuresHardware
  • 8 days longer battery life
    This smartwatch runs longer per charge than the average smartwatch (15 days vs 7 days). The average smartwatch runs for 7 days on a charge.
    15 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.
  • Crash detection capability
    This smartwatch supports crash detection, the average smartwatch does not. 14% of smartwatches support crash detection.
  • Built-in cellular module
    This smartwatch includes a cellular module, the average smartwatch does not. 16.6% of smartwatches include a cellular module.
  • Fall detection
    This smartwatch supports fall detection, the average smartwatch does not. 23% of smartwatches support fall detection.
    mode-limited fall detection
  • HRV tracking
    This smartwatch supports HRV tracking, the average smartwatch does not. 45.2% of smartwatches support HRV tracking.
  • Stronger display glass
    This smartwatch uses sapphire display glass, while the average smartwatch uses mineral glass.
    sapphire vs mineral glass
  • Maps support
    This smartwatch supports maps, the average smartwatch does not. 34.4% of smartwatches support maps.
  • 5.7% higher review score
    Reviews score
    7.4/ 10
    ✕
    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
    â–¼ Worse than 55% of models

    80%

    7.7

    Average grade

    20%

    6.1

    Popularity

    Grades by review (3)
    3 videos, average 7.0/10. We use 5 reviews; the 2 missing count as the category's typical 8.0: (7.0 × 3 + 8.0 × 2) ÷ 5 = 7.4. Reviews count 25% of the overall score.
    User ratings collected online are not part of this score.
    7.4 vs 7.0
  • Temperature sensing
    This smartwatch includes a temperature sensor, the average smartwatch does not. 31.9% of smartwatches include a temperature sensor.
  • HRV tracking
    This smartwatch supports HRV tracking, the average smartwatch does not. 45.2% of smartwatches support HRV tracking.
  • Calorie tracking
    This smartwatch supports calorie tracking, the average smartwatch does not. 48.7% of smartwatches support calorie tracking.
  • 3 years newer
    This smartwatch was released more recently than the average smartwatch (2024 vs 2021). The average smartwatch was released in 2021.
    July 2024
    2024 vs 2021
  • Weight tracking
    This smartwatch supports weight tracking, the average smartwatch does not. 41.9% of smartwatches support weight tracking.
    Tracked through the companion app or smart-scale sync.
  • 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.
  • 60 more exercise types
    This smartwatch includes more exercise types than the average smartwatch (150 vs 90). The average smartwatch includes 90 exercise types.
    Reported as at least 150 exercise modes.
    150 vs 90
  • 8 days longer battery life
    This smartwatch runs longer per charge than the average smartwatch (15 days vs 7 days). The average smartwatch runs for 7 days on a charge.
    15 days vs 7 days
  • 148 mAh larger battery capacity
    This smartwatch has a larger battery than the average smartwatch (453 mAh vs 305 mAh). The average smartwatch has a 305 mAh battery.
    453 mAh vs 305 mAh
  • 6 h longer training battery life
    This smartwatch lasts longer in training mode than the average smartwatch (26 h vs 20 h). The average smartwatch lasts 20 h in training mode.
    26 h vs 20 h
  • Built-in cellular module
    This smartwatch includes a cellular module, the average smartwatch does not. 16.6% of smartwatches include a cellular module.
  • Maps support
    This smartwatch supports maps, the average smartwatch does not. 34.4% of smartwatches support maps.
  • 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.
  • Supports Wi-Fi
    This smartwatch supports Wi-Fi, the average smartwatch does not. 43.5% of smartwatches support Wi-Fi.
  • More current Bluetooth version
    This smartwatch uses a more current Bluetooth version than the average smartwatch (5.3 vs 5).
    5.3 vs 5
  • Stronger display glass
    This smartwatch uses sapphire display glass, while the average smartwatch uses mineral glass.
    sapphire vs mineral glass
  • 1,450 nits brighter screen
    This smartwatch has a brighter screen than the average smartwatch (2,200 nits vs 750 nits). The average smartwatch peaks at 750 nits.
    2,200 nits vs 750 nits
  • Rugged construction
    This smartwatch has a rugged design, the average smartwatch does not. 41.2% of smartwatches have a rugged design.
  • Better case material
    This smartwatch uses titanium for the case material, while the average smartwatch uses polycarbonate.
    titanium vs polycarbonate
  • 135 ppi sharper screen
    This smartwatch has a sharper screen than the average smartwatch (461 ppi vs 326 ppi). The average smartwatch has a pixel density of 326 ppi.
    461 ppi vs 326 ppi
  • Higher resolution
    This smartwatch has a display resolution of 466x466, while the average smartwatch reaches 360x360.
    466x466 vs 360x360
  • Crash detection capability
    This smartwatch supports crash detection, the average smartwatch does not. 14% of smartwatches support crash detection.
  • Fall detection
    This smartwatch supports fall detection, the average smartwatch does not. 23% of smartwatches support fall detection.
    mode-limited fall detection
  • Emergency SOS
    This smartwatch includes Emergency SOS, the average smartwatch does not. 44.8% of smartwatches include Emergency SOS.
  • More frequent updates
    This smartwatch receives occasional software updates, while the average smartwatch receives ended updates.
    Updates are typically released about every 3 months.
    occasional vs ended
  • More advanced operating system
    This smartwatch runs a more advanced operating system than the average smartwatch (HyperOS vs Proprietary OS).
    HyperOS 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 third-party apps
    This smartwatch does not support third-party apps, the average smartwatch does. 51.6% of smartwatches support third-party apps.
  • No coaching features
    This smartwatch does not support coaching, the average smartwatch does. 58.8% of smartwatches support coaching.
  • No widget support
    This smartwatch does not support widgets, the average smartwatch does. 84.4% of smartwatches support widgets.
  • 0.9 mm thicker
    This smartwatch is thicker than the average smartwatch (12.6 mm vs 11.7 mm). The average smartwatch is 11.7 mm thick.
    Some sources mention variant-dependent thickness values.
    12.6 mm vs 11.7 mm
  • 4.4 mm wider case
    This smartwatch has a wider case than the average smartwatch (46.9 mm vs 42.5 mm). The average smartwatch measures 42.5 mm across.
    46.9 mm vs 42.5 mm
  • 81.8% more expensive
    Xiaomi Watch S4 Sport is more expensive than the average smartwatch (£200 vs £110).
    £200 vs £110
  • 4 g heavier
    This smartwatch is heavier than the average smartwatch (49 g vs 45 g). The average smartwatch weighs 45 g.
    49 g vs 45 g
  • 1.9 mm taller case
    This smartwatch has a taller case than the average smartwatch (46.9 mm vs 45 mm). The average smartwatch is 45 mm tall.
    46.9 mm vs 45 mm
  • 81.8% more expensive
    Xiaomi Watch S4 Sport is more expensive than the average smartwatch (£200 vs £110).
    £200 vs £110
  • No coaching features
    This smartwatch does not support coaching, the average smartwatch does. 58.8% of smartwatches support coaching.
  • 0.9 mm thicker
    This smartwatch is thicker than the average smartwatch (12.6 mm vs 11.7 mm). The average smartwatch is 11.7 mm thick.
    Some sources mention variant-dependent thickness values.
    12.6 mm vs 11.7 mm
  • 4.4 mm wider case
    This smartwatch has a wider case than the average smartwatch (46.9 mm vs 42.5 mm). The average smartwatch measures 42.5 mm across.
    46.9 mm vs 42.5 mm
  • 4 g heavier
    This smartwatch is heavier than the average smartwatch (49 g vs 45 g). The average smartwatch weighs 45 g.
    49 g vs 45 g
  • 1.9 mm taller case
    This smartwatch has a taller case than the average smartwatch (46.9 mm vs 45 mm). The average smartwatch is 45 mm tall.
    46.9 mm vs 45 mm
  • No third-party apps
    This smartwatch does not support third-party apps, the average smartwatch does. 51.6% of smartwatches support third-party apps.
  • No widget support
    This smartwatch does not support widgets, the average smartwatch does. 84.4% of smartwatches support widgets.

Video reviews

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

6.0
gizmochina
≈ estimated
08/08/2024
Hands-on review · GPS, maps and battery tests
Verdict
Xiaomi Watch S4 Sport has accurate GPS and long battery life, but fiddly map setup and basic features mean it is not ready yet.
Overview video
Hands-on video, no verdict
Hands-on video, no verdict
Not graded
Not graded
Overview video

Third-party reviews

What customers like about Xiaomi Watch S4 Sport

  • Premium design with high-quality materials like an aluminium alloy frame and PVD finish
  • Exceptionally bright AMOLED display (up to 2200 nits) that remains visible in direct sunlight
  • Unique interchangeable bezel system and standard 22mm lugs for extensive aesthetic customisation
  • Long-lasting battery life, typically ranging from 6 to 15 days depending on usage and AOD settings
  • Smooth and fluid user experience powered by Xiaomi's HyperOS
  • Satisfying and tactile rotating crown that significantly improves menu navigation

What customers don't like about Xiaomi Watch S4 Sport

  • Basic and non-interactable notifications that do not support emojis or direct replies
  • Limited smart ecosystem with no support for third-party apps like Spotify or WhatsApp
  • Inconsistent health tracking, particularly overzealous deep sleep detection and hit-or-miss exercise auto-detection
  • Restrictive NFC payment system that is only compatible with a limited number of banks and regions
  • 2-pin magnetic charging cable can be fiddly to align and lacks the convenience of standard wireless charging
  • Weak GNSS accuracy in dense urban environments due to the small antenna size in some models

Verdict

The Xiaomi Watch S4 Sport is a professional-grade outdoor smartwatch featuring a rugged aerospace-grade titanium body, a 1.43-inch AMOLED display with a peak brightness of 2200 nits, and sapphire glass for maximum durability. It is powered by a 586mAh battery offering up to 15 days of typical use and includes a dual-frequency five-star GNSS system (L1+L5) for high-precision GPS tracking, along with 5ATM water resistance and over 150 sports modes including specialized diving and mountaineering tracks. Key pros include its independent eSIM support for standalone calling, lightweight 49g design, and extensive health monitoring for heart rate, SpO2, and stress; however, cons include its relatively thick 13.5mm profile which may feel bulky during sleep, and the lack of a vast third-party app ecosystem compared to Wear OS competitors.

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