Key Highlights

• 1.62-inch AMOLED display with 1200 nits peak brightness
• Automatic brightness adjustment with ambient light sensor
• 150+ sports modes with performance insights
• Upgraded heart rate and SpO₂ accuracy
• Advanced sleep tracking with REM support
• 21-day battery life (typical use)
• Lightweight 15.8g body with aluminium alloy frame
• Wide strap ecosystem with quick-release design
• Linear motor with improved haptics
• Water-resistant up to 5ATM

Design & Build

The Xiaomi Smart Band 9 features a refined aluminium alloy frame available in five colours—Midnight Black, Glacier Silver, Mystic Rose, Arctic Blue, and Titan Gray. Its pill-shaped display sits in a compact 10.95mm slim body weighing just 15.8g, making it comfortable for all-day and sleep wear. The strap system uses a quick-release mechanism and supports many stylish accessory straps, including metal, braided, magnetic, chain, and TPU options.

Display

The 1.62-inch AMOLED display offers an impressive 1200-nit peak brightness, ensuring excellent visibility outdoors. It supports a 60Hz refresh rate and features automatic brightness adjustment via an ambient light sensor. The panel is responsive, includes accidental-touch prevention when wet, and supports over 200 customizable watch faces.

Performance

The fitness band uses optimized low-power sensors and algorithms to deliver smooth UI interactions and long-lasting performance. The linear motor provides stronger and more detailed haptic feedback. The band supports features such as music control, weather updates, focus mode, to-do lists, camera control (on supported phones), and more through the Mi Fitness app.

Camera System

This product does not include any camera hardware.

Battery Life

Equipped with a 233mAh battery, the Smart Band 9 lasts up to 21 days of typical use, 9 days in Always-On Display mode, and around 6.6 days under heavy use. It charges magnetically and takes approximately one hour to reach full capacity. Power efficiency is enhanced through upgraded sensors and optimized algorithms.

Security & Convenience

The band pairs securely via the Mi Fitness app and supports features like Find Phone, event reminders, world clock, and alarm functions. Its accidental-touch reduction ensures input reliability when the screen is wet or exposed to sweat.

Durability

With a 5ATM water-resistance rating, the Smart Band 9 is suitable for swimming and general water exposure. Certain strap materials (such as leather or braided nylon) are not recommended for water use. The overall build is sturdy yet lightweight, designed for long-term daily wear.

Software & Updates

The band connects through the Mi Fitness app, offering data syncing, customizations, sports analysis, and long-term health insights. The system supports Android 8.0+ and iOS 12.0+. Continuous software updates improve performance, add watch faces, and enhance fitness algorithms.

Who Should Buy

• Anyone needing a lightweight fitness tracker with long battery life
• Users focused on health metrics like heart rate, SpO₂, sleep, and stress
• People wanting accurate workout tracking with 150+ sports modes
• Shoppers looking for a bright AMOLED wearable for outdoor use
• Users who prefer a slim, stylish band with customizable straps

Not Ideal For

• Users looking for smartwatch-level apps or a full app ecosystem
• Those who need GPS built into the band
• People who prefer large screens or extensive gesture-based UI

Specifications

Frequently Asked Questions

People Also Ask

• Does the Xiaomi Smart Band 9 have GPS? - No, it relies on your smartphone for GPS data.
• How long does the Smart Band 9 battery last? - Up to 21 days with typical use.
• Is the Smart Band 9 good for sleep tracking? - Yes, it includes upgraded REM, cycle tracking, and high-precision sensors.
• Can I change the strap? - Yes, it supports many strap accessories and previous quick-release straps.