Xiaomi Watch S4 Rainbow

Xiaomi Watch S4 Rainbow – a colorful and versatile smartwatch for an active life

Xiaomi Watch S4 Rainbow makes a bold and personal statement among smartwatches. Its stylish black aluminum case is combined with vibrant rainbow accents on the bezel screws and strap stitching. This model is perfect for those who value both cutting-edge tech and eye-catching design. The watch weighs just 44.5 g (excluding strap) and includes a comfortable fluororubber and nylon strap (135–210 mm).

The 1.43-inch AMOLED touchscreen offers a stunning viewing experience with HBM brightness up to 1500 nits and a 60 Hz refresh rate. The watch supports Bluetooth 5.3, NFC payments (Mastercard & Visa*), and is compatible with the Xiaomi Smart Hub. It runs the fast and intuitive Xiaomi HyperOS 2, and the rotating crown makes navigating menus effortless.

With a single tap, you can monitor heart rate, stress, blood oxygen saturation and sleep. It also includes breathing exercises (relax, concentrate, take a nap, sleep soundly) and a micro-physiological report generated in about 60 seconds. The 12-channel sensor module and proprietary algorithm offer up to 98% measurement accuracy.

Fitness enthusiasts will enjoy over 150 sport modes, dual-frequency (L1+L5) GNSS via five satellite systems (GPS, Galileo, Glonass, BeiDou, QZSS), running coaching, form recognition, ski mode and fall detection. Data syncs with the Mi Fitness app and supports Health Connect, Strava and Suunto for even more flexibility.

This smartwatch supports your smart life: control Xiaomi Home devices, take remote photos, find your phone, and manage earbuds. New gesture controls let you reject calls or notifications, open the weather app or take a photo with a snap of your fingers.

Up to 15 days of battery life
Xiaomi Watch S4 Rainbow offers up to 15 days of use on a single charge. Just 5 minutes of fast charging provides power for two days – recharge while showering or brushing your teeth.

Key features:

• 1.43” AMOLED display (HBM brightness up to 1500 nits)
• Interchangeable bezel and rotating crown
• Xiaomi HyperOS 2 and Bluetooth 5.3
• 24/7 heart rate, SpO₂, stress and sleep monitoring
• Breathing exercises in multiple modes
• Accelerometer, gyroscope, ambient light, compass, barometer and Hall sensors
• 150+ sport modes, GNSS tracking, running coach
• NFC contactless payments (Mastercard & Visa*)
• Compatible with Android 6.0+ and iOS 12.0+

Specifications:

• Display: 1.43” AMOLED, 466 x 466 px
• Dimensions: 47.3 x 47.3 x 12 mm
• Case: black aluminum alloy with PVD finish and rainbow screws
• Strap: fluororubber + nylon, black with rainbow stitching (135–210 mm)
• Weight: 44.5 g (excluding strap)
• Operating system: Xiaomi HyperOS 2
• Battery: 486 mAh, up to 15 days
• GNSS: GPS, Galileo, Glonass, BeiDou, QZSS
• Bluetooth calls: yes
• Speaker: yes
• Water resistance: 5 ATM

Package includes: Xiaomi Watch S4 Rainbow (with strap and bezel), magnetic charging dock and user manual (incl. warranty info).

*Contactless payments only work with supported cards. See the manufacturer’s website for a list of supported banks.