Xiaomi Watch S4

The Xiaomi Watch S4 is designed to deliver a premium smartwatch experience with advanced health tracking, powerful sports modes, and a timeless design. Featuring a 1.43-inch AMOLED display with a peak brightness of up to 2200 nits, the watch ensures exceptional clarity in all lighting conditions. Its upgraded interchangeable bezel design and classic rotating crown provide both elegance and practicality, while the durable aluminum alloy frame highlights precision craftsmanship.

Built with intelligent health monitoring and over 150 sports modes, this smartwatch supports users in maintaining an active lifestyle. It includes features like heart rate monitoring, blood oxygen measurement, advanced sleep analysis, and all-day stress tracking. With dual-frequency GNSS for precise positioning, fall detection for safety, and professional training programs, the Xiaomi Watch S4 adapts to beginners and athletes alike. Combined with Xiaomi Smart Hub, Bluetooth calling, and seamless device management, it transforms everyday routines into a connected, smarter lifestyle.

Key Features

• Brilliant 1.43” AMOLED Display: Offers 326 PPI resolution, smooth 60Hz refresh rate, 1500 nits HBM brightness, and up to 2200 nits peak brightness for outstanding visibility indoors and outdoors.
• Timeless, Customizable Design: Interchangeable bezels in multiple styles such as Dual-Tone Ceramic, Pine Green, Midnight Carbon, Festive Orange, and Liquid Silver, allowing personalization to suit every occasion.
• Advanced Health Insights: Monitors heart rate, stress, blood oxygen, and sleep with improved accuracy through a high-precision sensing module and custom-developed algorithms.
• Fitness and Sports Tracking: Equipped with 150+ sports modes, professional running courses, skiing mode, running form recognition, and dual-frequency GNSS with five satellite systems for precise outdoor tracking.
• Smart Connectivity: Integrated with Xiaomi Smart Hub to manage devices, remote photo-taking, find-my-phone, NFC, and Bluetooth calling, making daily life more convenient.
• Long-lasting Battery: Supports up to 15 days of typical usage and offers fast charging that provides two days of power in just five minutes.
• Durability and Comfort: Water-resistant at 5ATM and crafted with premium materials, including fluororubber and leather straps for comfort and resilience.

Specifications

Dimensions

• 47.3mm x 47.3mm x 12.0mm (excluding strap and protrusions)
• Weight: approx. 44.5g (without strap)

Frame

• Aluminum alloy

Strap Options

• Black: fluororubber (140–210mm)
• Silver: fluororubber (140–210mm)
• Rainbow: fluororubber + nylon (135–210mm)

Sensors

• Heart rate (with SpO₂)
• Accelerometer
• Gyroscope
• Ambient light sensor
• Electronic compass
• Barometer
• Hall sensor

Satellite Positioning Systems

• GPS, Galileo, Glonass, BeiDou, QZSS

Battery

• Capacity: 486mAh
• Typical usage: up to 15 days
• Fast charging: 5 minutes = 2 days of usage

Display

• 1.43-inch AMOLED
• Resolution: 466 x 466 pixels (326 PPI)
• Refresh rate: 60Hz
• HBM brightness: 1500 nits
• Peak brightness: 2200 nits

Water Resistance

• 5ATM (up to 50 meters, suitable for swimming but not diving/saunas)

Audio & Connectivity

• Speaker: Supported
• Microphones: Dual
• NFC: Supported (region-dependent)
• Bluetooth calling: Supported (via smartphone connection)
• Wireless: Bluetooth® 5.3

Operating System

• Xiaomi HyperOS 2
• Compatibility: Android 8.0+ / iOS 14.0+

Charging

• 2-Pin magnetic charging dock

Package Contents

• Xiaomi Watch S4 (with bezel and strap)
• Magnetic charging dock
• User manual (with warranty notice)

Conclusion

The Xiaomi Watch S4 combines advanced technology, premium design, and intelligent lifestyle features into a single smartwatch. With its vibrant AMOLED display, robust fitness tracking, and customizable bezels, it caters to both style and functionality. Long-lasting battery performance, precise GNSS tracking, and seamless integration with Xiaomi’s ecosystem make it a reliable companion for everyday life, fitness, and professional use.