Xiaomi Watch S4 41mm Smartwatch, 32g, HyperOS 3

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Product guide

Xiaomi Watch S4 41mm Smartwatch, 32g, HyperOS 3

HyperOS: The Xiaomi Watch S4 41mm is a lightweight round smartwatch with built-in GPS, activity tracking and a stainless-steel case. Its listed 32 GB storage and health-monitoring features add breadth, but the supplied battery-life specification says only 4 Hours and customer feedback reports mixed Mi Fitness App compatibility.

At a glance

Built-in GPS and multisport activity tracking are listed, alongside heart-rate, blood-oxygen, stress and sleep monitoring.
The listing describes a 41mm stainless-steel case and a 32g watch, with a white leather strap.
The manufacturer describes a one-tap overview of several health metrics and skin-temperature monitoring for cycle predictions.

Price

£125.99Save 16%

Reference price: ~~£149.99~~

Price checked: 14 Nov 2026

View offer Ahead of Black FridayExplore the selection

Often bought together

RuenTech Metal Watch Strap Compatible with Xiaomi Watch S4 41 mm Bracelet, 18 mm Stainless Steel Strap for Xiaomi Watch S4 41 mm Smartwatch Bracelet

£12.98

Pros and cons

Pros

The listed built-in GPS and activity-tracking features suit buyers seeking a watch for fitness sessions without relying solely on phone location.
At a listed 32g, it is positioned as a lightweight option, and its round stainless-steel case and white leather strap offer a traditional watch appearance.
The supplied feature claims include heart rate, blood oxygen, stress, sleep and skin-temperature monitoring.

Cons

The technical listing specifies battery life as 4 Hours, a substantial limitation if accurate and worth resolving before purchase.

Technical specifications

13 specifications

Identity
Brand	Xiaomi
Model	Xiaomi Watch S4 41mm

Display and video
Screen size	1.32 Inches
Screen technology listed	Digital

Connectivity and controls
Wireless connection listed	Bluetooth

Power and battery
Battery energy listed	1.24 Watt Hours
Battery life listed	4 Hours
Battery type	Lithium Ion

Dimensions and installation
Form factor	Round
Dimensions listed	9 x 41 x 41 millimetres
Weight listed	32 Grams

Materials and protection
Water resistance listed	Waterproof

Computing specifications
Storage listed	32 GB

What to know before buying

Listing details to confirm

The battery details conflict in practice: the technical field lists 4 Hours, while customer feedback describes charging only once or twice a week. The listing also uses both 1.32 Inches and 240 x 280 display details, calls the display Digital without identifying its panel technology, and describes water resistance as both Waterproof and 5ATM. Confirm the exact variant and operating expectations. Customer feedback also reports mixed Mi Fitness App compatibility, so check compatibility with your phone and required app functions.

What’s in the box

WatchIncluded
CableIncluded
User manualIncluded
CaseCheck selected pack

Check which accessories are included in your selected pack before buying.

Who is it for?

A good fit for

Buyers wanting a compact, lightweight smartwatch with built-in GPS and multisport tracking.
People interested in wrist-based health and sleep metrics, provided they treat these as monitoring features rather than medical measurements.
Those who prefer a round stainless-steel case and a white leather strap.

Less suited to

Buyers who need confirmed long battery life, given the conflict between the listed 4 Hours and customer-reported charging frequency.
Anyone who needs dependable Mi Fitness App compatibility without first checking their phone and intended features.
Buyers requiring a confirmed display-panel type or clearly defined water-resistance conditions.

Xiaomi Watch S4 41mm Smartwatch, 32g, HyperOS 3 · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.5 / 5 · 1,011 ratings

5 stars73%73%
4 stars14%14%
3 stars6%6%
2 stars2%2%
1 star5%5%

Customer feedback is generally positive about quality, appearance, features and battery life, with some customers describing charging only once or twice a week. That battery impression contrasts with the listing's 4 Hours specification, so the discrepancy matters for daily use. Connectivity feedback is mixed, including reports of Mi Fitness App compatibility limitations. These are customer perceptions and do not establish how the watch will work with a particular phone.

Positive themes

Customer feedback praises the watch's build quality and appearance.
Some customers report battery life that requires charging only once or twice a week.
Customers mention the features positively, including sleep monitoring.

Mixed feedback

Connectivity receives mixed feedback, with reports of Mi Fitness App compatibility limitations.

Frequently asked questions

Does the Xiaomi Watch S4 41mm have built-in GPS?

Yes. Built-in GPS is listed, along with activity and multisport tracking.

How long does the battery last?

The technical details list 4 Hours, while customer feedback says it typically needs charging once or twice a week. These claims conflict, so confirm expected battery performance for the exact version and use.

Is it suitable for swimming?

The listing says both Waterproof and 5ATM, but does not specify the conditions or activities covered. Check the manufacturer's guidance before exposing it to water.

What health features are listed?

The listing names heart-rate, blood-oxygen, stress and sleep monitoring. Manufacturer feature text also describes skin-temperature tracking and cycle predictions.

What is included in the box?

The explicit contents list names the watch, cable and user manual. A case is not confirmed as a separate included item, so check the selected listing.