The smartwatch market in 2025 is more competitive than ever, and Xiaomi continues to push boundaries with stylish and affordable wearables. The Xiaomi Watch S4 41mm Smartwatch is the latest entry that combines elegance, fitness tracking, and everyday practicality. Designed for students, professionals, and fitness enthusiasts alike, it bridges the gap between luxury and value. But how well does it perform in real life, and is it truly worth your money this year? This detailed review breaks it all down.
Design and Build Quality
The Xiaomi Watch S4 41mm is a blend of craftsmanship and comfort. Its aluminum alloy frame feels sturdy yet refined, offering a modern minimalist appearance that complements both casual and formal outfits. At 41mm, it’s compact enough for smaller wrists but still manages to display information clearly. The watch features a tactile rotating crown and a secondary side button, providing smooth navigation without needing to rely solely on the touchscreen.
Xiaomi paid close attention to comfort. The included strap is made from high-quality fluoro-rubber, ensuring flexibility and durability even during intense workouts. With 5 ATM water resistance, it can handle swimming, rain, and accidental splashes effortlessly. Whether you wear it at the gym or in a meeting, the Watch S4 maintains a premium aesthetic that rivals far more expensive models.
Display and Performance
One of the standout elements of the Xiaomi Watch S4 41mm is its display. It comes with a vivid 1.43-inch AMOLED screen that delivers crisp visuals and excellent brightness, making it easy to read even under direct sunlight. The smooth interface provides a premium experience that’s rare in this price category.
Responsiveness is impressive thanks to Xiaomi’s latest wearable chipset and optimized software. The interface transitions smoothly between menus, apps, and widgets. HyperOS, Xiaomi’s refined operating system for wearables, keeps everything lightweight and responsive while offering an intuitive user experience.
Fitness data, notifications, and watch faces appear bright and detailed, maintaining both functionality and elegance. Although it doesn’t have the extensive app ecosystem of Wear OS or watchOS, the system is well balanced for everyday users who prioritize performance and reliability over endless third-party apps.
Xiaomi Watch S4 41mm Smartwatch Specification
| Network | Technology | No cellular connectivity |
|---|
| Launch | Announced | 2025, June 26 |
|---|---|---|
| Status | Available. Released 2025, June 26 |
| Body | Dimensions | 41.2 x 41.2 x 9.5 mm (1.62 x 1.62 x 0.37 in) |
|---|---|---|
| Weight | 32 g (1.13 oz) | |
| Build | Stainless steel bezel and frame | |
| SIM | No | |
| Waterproof (5ATM) |
| Display | Type | AMOLED, 1500 nits (HBM), 2200 nits (peak) |
|---|---|---|
| Size | 1.32 inches | |
| Resolution | 466 x 466 pixels (~320 ppi density) | |
| Protection | Scratch/drop-proof glass |
| Platform | OS | HyperOS 2 |
|---|
| Memory | Card slot | No |
|---|---|---|
| Internal | Unspecified |
| Camera | No |
|---|
| Sound | Loudspeaker | Yes |
|---|---|---|
| 3.5mm jack | No |
| Comms | WLAN | No |
|---|---|---|
| Bluetooth | 5.4, A2DP, LE | |
| Positioning | GPS, GLONASS, GALILEO, BDS, QZSS | |
| NFC | Yes (market/region dependent) | |
| Radio | No | |
| USB | No |
| Features | Sensors | Accelerometer, gyro, compass, barometer, heart rate, SpO2, thermometer (skin temperature) |
|---|
| Battery | Type | Li-Po 320 mAh |
|---|
| Misc | Colors | Black, Green, White, Gold |
|---|---|---|
| Models | M2502W1 |
Battery Life and Efficiency
Battery life is where the Xiaomi Watch S4 41mm truly shines. Xiaomi claims up to 15 days of typical use on a single charge, and while real-world results vary, most users can expect around a week of continuous use even with regular health tracking and notifications enabled. This extended endurance makes it ideal for those who prefer wearing their smartwatch day and night without frequent charging.
Charging is handled through a magnetic dock that connects securely to the back of the watch. A quick 30-minute top-up provides enough power for multiple days, and a full charge takes around an hour. Power management is smartly optimized to minimize drain from sensors, GPS, and the always-on display feature.
For travelers, athletes, or busy professionals, this long battery life translates into convenience. You can go on weekend trips or daily commutes without constantly worrying about running out of charge.
Smart Features and Connectivity
The Xiaomi Watch S4 41mm is more than just a fitness tracker; it’s a complete smart companion. It includes Bluetooth 5.3, Wi-Fi connectivity, and dual-band GPS for accurate positioning. Whether you’re running in the park or exploring a new city, the GPS locks onto signals quickly and maintains precision throughout your route.
The smartwatch supports Bluetooth calling with a built-in microphone and speaker, allowing you to take calls directly from your wrist when your phone is nearby. Notifications for messages, emails, and apps sync seamlessly, keeping you connected at all times. It also includes NFC support in select regions, enabling convenient contactless payments.
Health tracking is one of its biggest strengths. The watch continuously monitors heart rate, SpO2, sleep patterns, stress levels, and overall vitality. It supports over 150 workout modes, ranging from walking and cycling to swimming and yoga. Auto-detection ensures that your activity is logged even if you forget to start a workout manually.
The accompanying smartphone app provides detailed analytics and progress summaries, helping you stay motivated and informed about your fitness goals. While it doesn’t match the ecosystem depth of Apple or Samsung, it’s more than capable for anyone who values accurate health data and daily convenience.
Compatibility and Ecosystem Fit
The Xiaomi Watch S4 41mm works with both Android and iOS devices, but it integrates most seamlessly within Xiaomi’s ecosystem. Pairing is quick, and the app interface offers easy access to notifications, data insights, and watch customization options. Android users, especially those using Xiaomi smartphones, enjoy a more cohesive experience with features like synchronized health data and smart-home control integration.
For iPhone users, the essential smartwatch functions—like notifications, fitness tracking, and basic customization—still work effectively. However, some advanced connectivity features may be limited. Despite that, the Watch S4 remains a strong all-round performer that fits into multiple ecosystems without major compromise.
Pros and Cons
| Aspect | Pros | Cons |
|---|---|---|
| Build Quality | Premium aluminium design with rotating crown | Slightly heavier than lightweight competitors |
| Display | Bright AMOLED panel with sharp resolution | Limited third-party app compatibility |
| Battery | Long endurance up to two weeks | Charging speed could be faster |
| Smart Features | Bluetooth calling, accurate GPS, strong health tracking | No LTE or standalone connectivity option |
| Compatibility | Works with Android and iOS | Best experience within Xiaomi ecosystem |
Buyer’s Recommendation
The Xiaomi Watch S4 41mm is ideal for anyone seeking a stylish, practical smartwatch without the high price tag. It’s perfect for:
- Students and professionals who want reliable notifications, long battery life, and a sleek design.
- Fitness enthusiasts who value accurate health data and diverse workout tracking.
- Travelers who need extended endurance and dependable GPS connectivity.
However, if you prioritize app variety or advanced features like cellular connectivity and extensive third-party integrations, you might consider higher-end smartwatches. For most users, though, the Watch S4 delivers outstanding value and functionality.
Frequently Asked Questions (FAQ)
Q1. How long does the Xiaomi Watch S4 41mm battery last in daily use?
With moderate activity tracking, notifications, and Bluetooth calling, you can expect between 7 to 10 days of battery life. Lighter usage can stretch it closer to two weeks.
Q2. Is the Xiaomi Watch S4 41mm water resistant?
Yes. It has a 5 ATM water resistance rating, meaning it’s safe for swimming and everyday exposure to water but not suitable for diving or high-pressure water activities.
Q3. Can I make calls directly from the watch?
Yes. It features a built-in speaker and microphone, allowing you to take calls via Bluetooth when connected to your smartphone.
Q4. Does it support GPS tracking without a phone?
Absolutely. The built-in dual-frequency GPS ensures precise tracking for running, cycling, and outdoor workouts without needing to carry your phone.
Q5. Is it compatible with iPhones?
Yes. It pairs smoothly with iPhones through the companion app, though certain Xiaomi-exclusive features like smart-home control are best experienced on Android devices.
Q6. Can I customize the watch faces?
Yes. Xiaomi offers hundreds of digital and analog watch faces, and you can even upload your own photo for a personalized look.
The Xiaomi Watch S4 41mm Smartwatch is one of the most balanced and dependable wearables you can buy in 2025. It offers a refined design, strong health and fitness features, solid performance, and exceptional battery life. While it lacks the deep app ecosystem of premium models, it covers nearly all the essential functions that the average user actually needs.
Whether you’re a student managing daily tasks, a professional balancing work and fitness, or someone simply looking for a reliable companion on the wrist, the Watch S4 delivers on every front. Its combination of design, endurance, and smart functionality makes it a standout option in its price range.
If you want a premium-looking smartwatch that performs beyond expectations without draining your wallet, the Xiaomi Watch S4 41mm is absolutely worth buying in 2025.
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