Xiaomi Mi Watch S4 1.43” Bluetooth Smartwatch Heart Rate Monitor 5ATM NFC

It is available in an eSIM version with a brown leather strap and a Bluetooth version with a fluorine rubber strap, both featuring a 1.43″ AMOLED display. It retains Xiaomi’s innovative interchangeable bezel design, as seen on its predecessor, and also includes a newly upgraded rotating crown that supports rotary clicking.

The body of the watch is made of industry-leading aluminum alloy with a high-gloss brushed texture, offering a premium look and feel.

The Xiaomi Watch S4 operates on the all-new Xiaomi HyperOS 2, supporting over 150 sports modes, including outdoor activities, skiing, ball games, dancing, and more, covering a wide range of activity scenarios. Additionally, it features a new self-developed heart rate algorithm, increasing heart rate accuracy to 98.2%.
Furthermore, the Xiaomi Watch S4 supports independent dual-frequency five-satellite positioning for accurate GPS tracking. Other features of the watch include snap fingers gesture operation, AI route planning, smart NFC, and offers up to 15 days of battery life.

Xiaomi Watch S4 Specifications

• 1.43-inch (466 x 466 pixels) AMOLED screen, up to 2200 nits brightness, 256 levels of adaptive brightness
• Xiaomi HyperOS 2
• Sensors: Heart rate sensor (including blood oxygen), acceleration sensor, gyroscope, geomagnetic sensor, air pressure sensor, ambient light sensor
• 150+ sports modes
• Daily activity tracking, Women’s Health, Fall Detection, Stress monitoring, breath training, sleep and heart rate monitoring
• 5ATM water-resistant
• Dimensions: 47.3mm × 47.3mm × 12mm; Weight: 44.5g
• Strap Material: Fluororubber/Leather
• Dual band : L1+L5 (GPS | Galileo | Glonass | Beidou | QZSS)
• eSIM support, Supports 4G / 3G, 2.4GHz/5GHz Wi-Fi, Bluetooth 5.2
• 486mAh battery, Up to 7 days with typical usage and 3 days with heavy usage (LTE version), Up to 15 days with typical usage, and 5 days with AOD ON (BT version)

Pricing and Availability

The Xiaomi Watch S4 comes in black, silver, black rainbow (braided strap), and brown (leather), as well as offering various options of colors for leather or silicone straps.