Xiaomi Watch S4 41mm

$140.00
Brand: Xiaomi
Category: Smart Watch

Processor:
RAM:
Storage:
Display: 1.32 inches
Camera: None
Operating System: HyperOS 2

Our Rating

The overall rating is based on review by our editors

9.1 4.6 1

Design 9 / 10
Display 9 / 10
Camera 9 / 10
Multimedia 9 / 10
Features 10 / 10
Connectivity 9 / 10
Call Quality 9 / 10
Usability 9 / 10
Performance 9 / 10
Battery 9 / 10

Xiaomi Watch S4 41mm has been officially released on July 19, 2024.

Product Main Features:

This smartwatch features a premium design with a stainless steel bezel and frame, measuring 41.2 x 41.2 x 9.5 mm and weighing just 32 g for comfortable wear. It’s waterproof up to 5 ATM, making it suitable for swimming and everyday use. The 1.32-inch AMOLED display offers vibrant visuals with 1500 nits HBM and peaks at 2200 nits brightness, delivering a sharp 466 x 466 resolution (~320 ppi) protected by scratch/drop-proof glass.

Running HyperOS 2, it offers smooth performance with an intuitive interface. Connectivity includes Bluetooth 5.4 with A2DP and LE for reliable pairing with smartphones. Xiaomi Watch S4 41mm features advanced positioning support with GPS, GLONASS, GALILEO, BDS, and QZSS for precise outdoor tracking. NFC support is available in select markets for convenient payments.

The watch includes a built-in loudspeaker for calls or alerts (no 3.5 mm jack). Sensor suite includes an accelerometer, gyro, compass, barometer, heart rate monitor, SpO₂ sensor, and a skin temperature thermometer, enabling robust health and fitness tracking. Powered by a 320 mAh Li-Po battery, it offers dependable daily use. Available in Black, Green, White, and Gold finishes, it combines style, durability, and advanced smart features in a compact, modern package.

Comments

Xiaomi Watch S4 41mm - SPECIFICATIONS

General

Model

Xiaomi Watch S4 41mm
Released

June 2025
Status

Available

Design

Type Design Type called form factor refers to a mobile phone's size, shape, and style as well as the layout and position of major components of phone. There are three major form factors seen in mobile phones => bar phones, folding phones and sliding phones.

Bar
Dimensions

41.2 x 41.2 x 9.5 mm
Weight

32 Grams
Waterproof

Waterproof (5ATM)

Display

Display Type Display Technology => A number of display technologies and types used in mobile phones => TFT (Thin Film Transistor), IPS (In-Place Switching), OLED (Organic Light Emitting Diode), AMOLED (Active-Matrix Organic Light-Emitting Diode), Super AMOLED (an even advanced version of AMOLED), Resistive Touchscreen (Resistive touchscreens contain two layer of conductive material with a very small gap between them which acts as a resistance), Capacitive Touchsceen (Capacitive touchscreen technology consists of a layer of glass coated with a transparent conductor)

AMOLED
Size

1.32 inches
Resolution

466 x 466 pixels
Display Colors Display Colors is refers to the number of different shades of colors that the screen is capable of displaying => 64K colors, 256K colors and 16 million colors, Obviously 16M is highest available range of colors and better than others.

16M colors
Pixel Density Pixel Density (PPI) is refers to the concentration of pixels on a particular display, measured in pixels per inch (ppi). Pixel density is calculated by dividing the diagonal pixel resolution of a display by its diagonal size, higher pixel density better display quality.

~320 ppi density
Display Protection Display Protection => Gorilla Glass is a special alkali-aluminosilicate glass shield with exceptional damage resistance that helps protect mobile displays from scratches, drops, and bumps of everyday use, It is always better to go for a smartphone with Gorilla Glass for that added protection and peace of mind.

Scratch/drop-proof glass
Features

1500 nits (HBM), 2200 nits (peak)

Hardware

Memory Card Slot Memory Card Slot is a special slot for inserting a memory card. Memory cards allow you to expand the phone's built-in memory, A memory card (sometimes called a flash memory card or a storage card) is a small storage medium used to store data such as text, pictures, audio, and video, for use on small, portable or remote computing devices such as mobile phones, mp3 players, digital cameras.

No
Sensors Sensors are electronic components that detects and responds to some type of input from the physical environment. The specific input could be light, heat, motion, moisture, pressure and location, The output is generally a signal that is converted to use in computing systems, a location sensor, such as a GPS receiver is able to detect current location of your electronic device.

Accelerometer, gyro, compass, barometer, heart rate, SpO2, thermometer (skin temperature)

Software

Operating System OS => Every computer system run on a base software called Operating System (OS). Operating System controls all basic operations of the computer (such as smartphone, PDAs, tablet computers and other handheld devices). The Operating System allows the user to install and run third party applications (apps), apps are used to add new functionality to the device.

HyperOS 2

Camera

Rear Camera Camera is able to capture photographs and usually videos, The most important characteristics of a camera are the resolution (measured in megapixels), lens focus type (fixed or automatic), higher megapixel cameras are known to capture higher quality photos, but not always a good measurement of the photos quality.

No
Image

No
Video

No
Flash Flash Light => There is commonly two types of flash lights are used in camera mobile phones, LED Flash (LED flash offers lower power consumption with drive circuitry that takes up very little room, LEDs can be strobed faster than any other light source), Xenon Flash (xenon flash produces an extremely intense full-spectrum white light for a very short duration)

No
Front Camera

No

Network

SIM SIM (Subscriber Identity Module) is a small card that contains mobile network subscriber's account information. This allows the phone using the card to attach to a mobile network. The SIM card is most commonly associated with GSM and UMTS mobile networks. Moving a SIM card from one phone to another allows a subscriber to switch mobile phones without having to contact their mobile network carrier. SIM cards can also be used by a phone to store limited amounts of data, such as phone numbers and text messages.

Standard SIM
Dual SIM

eSIM

Connectivity

Wi-fi Wi-Fi is a popular wireless networking technology using radio waves to provide high-speed network connections that allows devices to communicate without cords or cables, Wi-Fi is increasingly becoming the preferred mode of internet connectivity all over the world.

No
USB

No
GPS GPS The Global Positioning System is a satellite-based radio navigation system, GPS permits users to determine their position, velocity and the time 24 hours a day, in all weather, anywhere in the world, In order to locate your position, your device or GPS receiver must have a clear view of the sky.

Yes
NFC NFC (Near field communication) is a set of standards for smartphones and similar devices to establish peer-to-peer radio communications with each other by touching them together or bringing them into proximity, usually no more than a few inches.

Yes (market/region dependent)
Wireless Charging Wireless Charging (Inductive Charging) uses an electromagnetic field to transfer energy between two objects. This is usually done with a charging station. Energy is sent through an inductive coupling to an electrical device, which can then use that energy to charge batteries or run the device.

No
Headphone Jack

No

Battery

Capacity Battery Capacity

Li-Po 320 mAh
Placement

Non-removable

Media

Video Playback

No
Video Out

No
FM Radio

No
Ring Tones

No
Loudspeaker

No
Handsfree

No

Data

Messaging

SMS SMS (Short Messaging Service) is a text messaging service component of phone, Web, or mobile communication systems. It uses standardized communications protocols to allow mobile phone devices to exchange short text messages over the networks.

No
MMS MMS (Multimedia Messaging Service) is a standard way to send messages that include multimedia content (audio clips, video clips and images) to and from mobile phones over wireless networks using the WAP protocol.