Xiaomi Watch S4
The Xiaomi Watch S4 features a sharp 1.43-inch AMOLED display with a resolution of 466 × 466 pixels and up to 2,200 nits brightness for excellent outdoor visibility. It sports a lightweight aluminum alloy case with a high-gloss PVD bezel, giving it a sleek and premium look. Powered by Xiaomi’s HyperOS, the watch offers smooth navigation with a rotating crown and customizable side button. It supports 24/7 heart rate monitoring, SpO₂ tracking, sleep analysis, stress monitoring, and a one-tap physical exam feature for quick health insights. Dual-frequency GNSS provides accurate positioning with support for GPS, GLONASS, Galileo, BDS, and QZSS. With over 150 sports modes and automatic workout detection, it's a solid companion for active users. The Watch S4 includes Bluetooth calling, NFC (region-dependent), and smart features like music control and voice assistant access. Its 486mAh battery delivers up to 15 days of typical use and supports fast charging for added convenience.
Key Features:
Display: 1.43-inch AMOLED display with a high brightness of 500 nits, ensuring clear visibility even in bright sunlight.
Sports Modes: Over 100 sports modes, including options for running, cycling, swimming, and more, with automatic movement detection.
Health Monitoring: 24/7 heart rate monitoring, blood oxygen (SpO2) monitoring, stress monitoring, and sleep tracking with detailed sleep breathing analysis, according to Xiaomi.
GNSS: Supports L1 and L5 dual-band GNSS for accurate outdoor activity tracking.
Connectivity: Bluetooth 5.3 for calls and other device connections.
Battery Life: Up to 14 days of battery life.
Design: Features a sleek aluminum alloy frame and customizable bezels and straps, according to gadget reviews.
Water Resistance: 5ATM water resistance, making it suitable for swimming and other water-based activities.
Other Features: Fall detection (especially useful in skiing mode), camera control, phone finder, notification support, and more.
Operating System: Runs on Xiaomi Hyper OS version 2, which is user-friendly and not based on Android or Wear OS, says a reviewer.
Compatibility: Compatible with both Android and iOS devices.
Specifications:
Display Size:
1.43” AMOLED
Display Resolution:
466 x 466, 326ppi
Material:
Aluminum Alloy Case
Water/Dust Resistance:
5ATM
Battery:
486mAh
Up to 15 days typical usage mode
Connection:
Bluetooth 5.3
Bluetooth Phone Call:
Yes
Charging:
5V2A
Storage:
Undisclosed
App:
Xiaomi HyperOS 2.0
Weight:
47 x 47 x 12 mm
44g
Function:
150+ sports mode
Upgraded dual-microphone noise reduction
Automatic Movement Detection
Improved heart rate detection
One click micro physical examination function
First support for running posture recognition
Support fall detection in skiing mode
Detachable bezel deco
5-system dual-band GNSS
Daily Activity recording
Heart Rate Monitoring
Sleep / Stress / Breath Training
Blood Oxygen Monitoring
Women’s Health
Compatibility:
Android 8.0 or iOS 12.0 and above
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Xiaomi Watch S4
