Xiaomi · Reviewed by Critical Tech · Published 2026-06-07
Based on a review by Critical Tech (accessed 2026-06-07).
Based on this review alone: buy it if you care about durable 316l stainless steel frame — just accept limited third-party app ecosystem compared to some competitors.
The reviewer concludes that the Xiaomi Watch S5 is "one of Xiaomi's most complete smartwatches to date," combining premium hardware, long-lasting battery performance, accurate health tracking, advanced sports capabilities, and practical smart features into a well-designed wearable. It stands out as a strong release for users seeking a stylish, reliable, and feature-rich device with exceptional battery life.
This review provides an in-depth look at the Xiaomi Watch S5, covering its design, display technology, battery life, fitness and health tracking capabilities, and software performance. It details specific upgrades and features, positioning the watch as a balanced option between fitness trackers and high-end smartwatches.
The Xiaomi Watch S5 is a highly recommended smartwatch for users seeking a feature-rich wearable with exceptional battery life. It boasts a stunning 1.48-inch AMOLED display with 2,500 nits peak brightness, making it easily readable outdoors, and its massive 815 mAh battery offers impressive endurance. However, some users might find its third-party app ecosystem limited compared to competitors. If you prioritize long battery life, accurate fitness tracking, and a premium design, this smartwatch is an excellent choice. If a broad selection of third-party applications is crucial for your daily use, you might want to consider alternatives.
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Xiaomi has equipped the Watch S5 with a 1.48-in AMOLED panel.
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The 480 by 480 resolution ensures sharp text and detailed graphics.
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The impressive peak brightness of 2,500 nits makes the screen exceptionally easy to read even under direct sunlight.
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The large 815 mA hour hour battery is a key feature of the Watch S5.
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The 815 mAh battery delivers impressive endurance that easily surpasses many competing smartwatches.
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The watch supports more than 150 sports modes, covering a wide range of activities.
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The upgraded dual-band five-system GNSS positioning system improves location accuracy and route tracking during outdoor workouts.
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The skiing mode includes fall detection technology capable of identifying severe accidents.
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The new sensor system utilizes four LEDs and four photodiodes to improve the accuracy of heart rate and blood oxygen monitoring.
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Xiaomi claims heart rate accuracy reaches 98.4%, which places the Watch S5 among more capable consumer-grade health tracking devices.
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Running on HyperOS 3, the Watch S5 benefits from tighter integration within Xiaomi's growing ecosystem of devices.
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Performance throughout daily use feels smooth and responsive thanks to the optimized HyperOS platform, with fluid navigation and a clean, intuitive layout.
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The watch features a durable 316L stainless steel frame that gives it a sophisticated appearance.
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The Xiaomi Watch S5 immediately stands out with its refined circular design and premium construction.
The Xiaomi Watch S5 is equipped with a 1.48-inch AMOLED panel that provides sharp text and detailed graphics, thanks to its 480x480 resolution. Its impressive peak brightness of 2,500 nits makes the screen exceptionally easy to read, even under direct sunlight, offering excellent visual quality.
The Xiaomi Watch S5 boasts a large 815 mAh battery, which contributes to its impressive endurance. The reviewer states that this battery life easily surpasses many competing smartwatches, indicating a strong advantage in the market for users seeking long-lasting power.
The Watch S5 offers comprehensive fitness and sports tracking with support for more than 150 sports modes. It incorporates an upgraded dual-band five-system GNSS positioning system to improve location accuracy and route tracking during outdoor workouts. Additionally, it features unique functionalities such as a skiing mode that includes fall detection technology to identify severe accidents.
The Watch S5's health tracking capabilities have received notable upgrades, featuring a new sensor system that utilizes four LEDs and four photodiodes to improve the accuracy of heart rate and blood oxygen monitoring. Xiaomi claims that the heart rate accuracy reaches 98.4%, placing the watch among the more capable consumer-grade health tracking devices available.
The Xiaomi Watch S5 runs on HyperOS 3, providing a smooth and responsive performance throughout daily use. The optimized platform ensures fluid navigation between menus, easy management of notifications, and maintains a clean and intuitive interface, benefiting from tighter integration within Xiaomi's device ecosystem.
The Xiaomi Watch S5 stands out with its refined circular design and premium construction. It features a durable 316L stainless steel frame, which gives it a sophisticated appearance suitable for both casual and professional settings, aiming for a high-end wearable experience.
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The Xiaomi Watch S5 is presented as a significant evolution, offering a 1.48-inch AMOLED display with 2,500 nits peak brightness, a large 815 mAh battery, and over 150 sports modes with upgraded GNSS. It features an improved health sensor system, claiming 98.4% heart rate accuracy, and runs smoothly on HyperOS 3. The reviewer highlights its premium 316L stainless steel design and competitive market positioning, ultimately deeming it a very complete smartwatch.
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