Xiaomi Watch S4 Black

Key features of the Xiaomi Watch S4 Black smartwatch

A precisely crafted AMOLED display with a fine resolution

The AMOLED display on the Xiaomi Watch S4 is a joy to behold. Everything is perfectly visible on the 1.43" display, and thanks to AMOLED technology, you can look forward to a more colourful and smoother viewing experience. The Xiaomi Watch also boasts excellent readability even in direct sunlight, so you won't miss any incoming notifications. The brightness reaches a maximum value of 2200 nits, and the display's glow can automatically adapt to ambient conditions. The watch's display has a resolution of 466×466px with a density of 326 PPI and a refresh rate of 60Hz.

Up to 15-day battery life

Inside the Xiaomi Watch S4 is a 486mAh battery that uses AI algorithms to optimise power consumption. In smartwatch mode, the battery life is around 15 days. If you want to charge the watch quickly, just 5 minutes on the charger will give it enough power for up to 2 days of normal use.

Xiaomi Watch S4 uses multi-system GPS and has great battery life

The Xiaomi Watch S4 is equipped with a GNSS chip that supports all five key positioning systems: GPS, BeiDou, GLONASS, Galileo and QZSS. The chip also features enhanced advanced algorithms for faster and more accurate positioning.

The Xiaomi smartwatch offers more than 150 sport modes

Don't be afraid to get active and start exercising or trying other activities. The Xiaomi Watch S4 accurately measures your performance parameters — heart rate, average temperature or calories burned. You can choose from more than 150 sport modes. Of course, it has a 5 ATM water-resistant design, so you can go for a swim and measure your swimming performance without worry. The Xiaomi Watch S4 smartwatch provides you with professional courses and systematic exercises. Using advanced sensors, the smartwatch can automatically recognise key indicators of running technique (vertical ratio, vertical amplitude or ground contact time). With the Xiaomi Watch S4 smartwatch, you can also record the duration, distance and average speed of every ski/snowboard run. You can then find more detailed information in the app on the results page. You can also view a map of your ski trail.

The Xiaomi Watch S4 has a sophisticated PPG biosensor

The Xiaomi Watch S4 performs 24-hour heart rate monitoring and can monitor blood oxygen levels (SpO₂). The PPG biosensor with improved hardware and algorithms ensures more accurate heart rate measurement during low and very high-intensity activities. If you're stressed, the Xiaomi Watch S4 can offer you breathing exercises to help you calm down. You can adjust the blood oxygen measurement interval — keep it on all day, or set your preferred interval. The Xiaomi Watch S4 smartwatch records your night's sleep more accurately, including all its phases, while also capturing occasional short naps during the day. With the Xiaomi watch, you can identify your sleep pattern and improve your sleeping habits.

Handle calls from your paired phone on your wrist

Connect the Xiaomi Watch S4 to your phone via Bluetooth and you can handle incoming calls from your wrist. The watch is equipped with both a microphone and a speaker. This can also be used in an emergency situation, as a triple press of the side button on the bottom right will dial an emergency contact. For this feature to work, you need to connect the Xiaomi Watch S4 to your mobile phone via Bluetooth and set an emergency contact in the app. An alert can also be sent to the contact automatically if you do not respond to the prompt that you are okay within 60 seconds.

The Xiaomi Watch S4 enables contactless payments

Thanks to NFC technology, you can use contactless payments and pay with your Xiaomi watch via Mastercard and Visa cards. This feature is available with selected banks and needs to be verified on the manufacturer's or bank's website.

Mi Fitness app

Always have fresh and detailed information about your health or activity on hand. After pairing with the Xiaomi Watch S4 smartwatch, the companion Mi Fitness app stores all the measured data, which you can then view in a clear format. It now also supports the Health Connect service and training apps such as Strava or Suunto.