altimeter, gyroscope, temperature sensor, heart rate sensor, barometer, accelerometer
Functions
Measurements
sleep duration and quality, stress level and recovery, calories burned, number of steps, body temperature
Smartphone Integration
ability to answer calls, SMS notifications, call notifications
Organizer
calendar, alarm clock, calculator
Power and Charging
Battery Capacity
320 mA·h
Active Mode Battery Life
72 h
Battery Life When Idle
192 h
Dimensions and Weight
Length
41.2 mm
Width
41.2 mm
Thickness
9.5 mm
Weight
32 g
Packaged Dimensions and Weight
Package Width
70 mm
Package Height
280 mm
Packaging Depth
36 mm
Packaged Weight
301 g
Description
The Xiaomi Watch S4 smartwatch features a lightweight aluminum body that transitions smoothly into the strap. The device weighs only about 32 g, and its well-engineered ergonomics prevent discomfort even during 24/7 wear. The AMOLED display with a resolution of 466x466 pixels and peak brightness up to 2000 nits ensures excellent legibility even under direct sunlight. The Always-On Display feature allows viewing time and primary notifications without waking the screen, while intelligent backlight control conserves battery power by dimming brightness when the hand is still.
Xiaomi Watch S4 runs on HyperOS — an operating system with an intuitive interface and fast response to gestures. Synchronization with a smartphone provides access to instant notifications for calls, messages, and app events. For sports enthusiasts, more than 150 workout modes are available — from running and yoga to swimming and strength training. Built-in GPS accurately tracks routes and distance, while automatic activity recognition prompts you to save data if you forgot to start a workout.