Xiaomi Watch S5

21 Days of Battery, One Screen That Never Dims When It Matters

The Watch S5 pairs a 1.48" AMOLED display running at 480×480 with genuinely bright output — 1500 nits for everyday use and up to 2500 nits at peak, so the screen stays readable in direct sunlight instead of washing out. An 815mAh battery backs that up with up to 21 days of typical use, stretching the usual smartwatch charging cycle from days to weeks.

Health tracking runs continuously through a heart rate and blood oxygen sensor, alongside a barometer, compass, and ambient light sensor for context-aware readings. Dual-band, five-system GNSS (GPS, Galileo, GLONASS, BeiDou, QZSS) locks onto location faster and holds it more accurately through dense city blocks and tree cover alike, useful for outdoor training without a paired phone nearby.

Bluetooth 5.4 covers calls and notifications directly from the wrist with a built-in speaker and microphone, NFC handles contactless payments where supported, and 5ATM water resistance covers swimming and daily wear. Each colorway pairs a different case and strap finish — stainless steel with fluororubber on Black and Silver, a ceramic bezel with genuine leather on Ceramic Blue, and forged carbon with a nylon-woven strap on Jungle Green.

Key Features

• Ultra-Bright AMOLED Display: 1.48" screen with up to 2500 nits peak brightness
• Up to 21 Days of Battery Life: 815mAh battery for light usage patterns
• 5-System GNSS: GPS, Galileo, GLONASS, BeiDou, and QZSS for accurate outdoor tracking
• Heart Rate + SpO2 Monitoring: Continuous health tracking on the wrist
• Bluetooth Calling: Built-in speaker and microphone for hands-free calls
• 5ATM Water Resistance: Rated for swimming and shallow water activities

Specifications

• Display: 1.48" AMOLED, 480 x 480 resolution, 323 PPI
• Brightness: 1500 nits (HBM), 2500 nits peak
• Battery: 815mAh
• Positioning: GPS, Galileo, GLONASS, BeiDou, QZSS
• Sensors: Heart rate + SpO2, accelerometer, gyroscope, barometer, compass, ambient light
• Water Resistance: 5ATM
• Connectivity: Bluetooth 5.4, Wi-Fi, NFC, optional eSIM, built-in speaker and microphone
• Case: Stainless steel body; ceramic or forged carbon bezel depending on color
• Compatibility: Android 8.0+ / iOS 14.0+
• Dimensions: 46 x 46 x 10.99 mm
• Weight: Approx. 46g (without strap)
• Models: Bluetooth Version M2530W1 / eSIM Version M2517W1