The Xiaomi Watch S4 has arrived, unveiled at MWC 2025 on March 2, 2025, and it’s already shaping up as a top contender for the best affordable smartwatch of 2025. With its swappable bezels, vibrant AMOLED display, and long-lasting battery, Xiaomi’s latest wearable promises to steal the spotlight from pricier rivals. In this Xiaomi Watch S4 review, we’re diving deep into its design, features, fitness tracking, and pricing to see if it’s worth your wrist. Whether you’re searching for a smartwatch with long battery life or a fitness tracking smartwatch, here’s why the Watch S4 could top Google’s rankings—and your shopping list.
Xiaomi Watch S4 Design: Sleek, Customizable, and Built to Last
The Xiaomi Watch S4 design screams versatility. Its 47.3 mm aluminum alloy case, paired with a glossy stainless-steel bezel, weighs just 44.5 grams and measures 12 mm thick—perfect for all-day comfort. Available in black, silver, and a striking rainbow finish, it’s a standout for anyone Googling “customizable smartwatch.” The swappable bezels, upgraded with a bayonet lock and a vibration alert for detachment, let you switch from sporty to sophisticated in seconds. Pair it with 22 mm straps, and you’ve got a device that adapts to your style.
With 5ATM water resistance, it’s ready for swims or showers, making it a strong pick for “waterproof smartwatch 2025” searches. Compared to the Xiaomi Watch S3, the S4 refines this formula with a premium feel that rivals the Samsung Galaxy Watch FE—without the premium price.
Xiaomi Watch S4 Display: Brightest in Class
The Xiaomi Watch S4 display is a 1.43-inch AMOLED panel with a 466 x 466 resolution (326 ppi), delivering crisp visuals and rich colors. Its 2200 nits peak brightness (1500 nits HBM) outshines the Watch S3’s 600 nits, ensuring readability even in direct sunlight—a must for “brightest smartwatch display” queries. A rotating crown enhances navigation, while scratch-proof glass keeps it pristine.
For users searching “best smartwatch screen 2025,” the S4’s brightness and clarity make it a frontrunner, especially at its price point. It’s a step up from competitors like the Huawei Watch Fit 3, positioning it high in Google’s results.
Performance and HyperOS 2: Smartwatch Power Unleashed
Running on HyperOS 2, the Xiaomi Watch S4 performance is smooth and responsive. While it skips Wear OS’s app ecosystem, HyperOS 2 brings gesture controls (snap your fingers to manage smart home devices) and seamless syncing with Xiaomi’s AIoT platform—ideal for “smart home compatible smartwatch” searches. Bluetooth 5.3, dual-frequency GNSS (GPS, GLONASS, etc.), and Wi-Fi ensure fast connections and accurate tracking.
Though Xiaomi keeps the processor hush-hush, early tests suggest it handles notifications, calls (via dual mics), and fitness tracking without lag. For “Xiaomi Watch S4 vs Samsung Galaxy Watch,” it trades app variety for ecosystem integration and affordability.
Fitness Tracking: Xiaomi Watch S4’s Health Game
The Xiaomi Watch S4 fitness tracking suite is a highlight for “best fitness tracking smartwatch” hunters. A 12-channel heart rate sensor (98% accurate, per Xiaomi), 24/7 SpO2 monitoring, stress tracking, and advanced sleep analysis cover the basics. Add over 150 sports modes, AI route planning, and a dual-mode walkie-talkie feature, and it’s a dream for outdoor enthusiasts searching “smartwatch for hiking.”
GPS locks on fast, and battery efficiency shines—up to 15 days battery life on a 486 mAh cell, or two days from a 5-minute charge. For “smartwatch with long battery life,” this beats out many rivals, including the Galaxy Watch FE.
Xiaomi Watch S4 Price: Affordable Excellence
The Xiaomi Watch S4 price seals its SEO dominance: €159.99 for black/silver models and €169.99 for rainbow, with an estimated ₹22,999 in India. Launching post-MWC 2025 via Xiaomi’s store and major retailers, it undercuts the Galaxy Watch FE (€199) and Google Pixel Watch (€279). For “best budget smartwatch 2025,” it’s a slam dunk.
Xiaomi Watch S4 vs. Competitors
- Vs. Samsung Galaxy Watch FE: Brighter screen, longer battery, lower price—but no Wear OS apps.
- Vs. Huawei Watch Fit 3: More customization and ecosystem perks, though lighter competitors exist.
- Vs. Xiaomi Watch S3: Upgraded brightness, bezels, and HyperOS 2 make the S4 the better buy.
For “Xiaomi Watch S4 comparison,” it’s a value-packed mid-ranger that’s hard to beat.
** Xiaomi Watch S4 Review Verdict**
The Xiaomi Watch S4 isn’t chasing Apple Watch Ultra’s crown—it’s redefining the mid-range game. Its bright display, long battery life, and unique customization make it a top pick for “best affordable smartwatch 2025.” Our full review is coming, but early impressions suggest it’s a Google-ranking juggernaut. Searching for your next wearable? The Watch S4 might just be it.
