Xiaomi Smart Band 9 Pro specifications and in-depth review

Xiaomi Smart Band 9 Pro

Manufacturer: Xiaomi

The Xiaomi Smart Band 9 Pro is a fitness tracker built around a 1.74″ OLED display with a resolution of 336 x 480 px and a pixel density of 336 ppi, housed in a slim body measuring 43.27 mm tall, 32.49 mm wide, and just 10.8 mm thick. Weighing 24.5 g, it keeps things lightweight on the wrist while still offering an Always-On Display mode and a peak brightness of 1200 nits for clear readability in varied lighting conditions. The band carries a 5 ATM water resistance rating, certified to a depth of 50 m, and features a replaceable band for added versatility.

On the sensor and tracking side, the Smart Band 9 Pro includes a heart rate monitor, pulse oximeter, gyroscope, accelerometer, and a compass, along with built-in GPS with Galileo support for accurate outdoor route tracking without relying on a paired phone. It covers 150 exercise modes and handles sleep tracking, swim stroke counting, VO2 max measurement, and elevation tracking, among other activity metrics. The 350 mAh rechargeable battery delivers up to 21 days of use on a full charge, which takes approximately 1.25 hours to complete, while the always-on display mode extends to around 10 days. Connectivity runs through Bluetooth 5.4 with a maximum range of 10 m, and the band pairs with both Android and iOS devices through a free companion app that supports goal setting, coaching, food and water tracking, and menstrual cycle predictions.

Pros
  • Built-in GPS with Galileo support enables accurate outdoor route tracking without needing a paired phone
  • Up to 21 days of battery life on a single charge, with a relatively quick 1.25-hour charge time
  • The 1.74″ AMOLED display reaches 1200 nits of brightness, aided by an ambient light sensor for automatic adjustment
  • Covers 150 exercise types with automatic activity detection, swim stroke counting, and detailed sleep reports
  • Comprehensive health monitoring includes heart rate tracking, blood oxygenation, VO2 max, irregular heart rate warnings, and menstrual cycle features
  • 5 ATM water resistance rated to 50 m makes it suitable for swimming and water-based activities
Cons
  • No NFC support limits contactless payment functionality
  • Wireless charging is not available, requiring a physical cable for every charge
  • Always-on display mode reduces battery life significantly, from 21 days down to 10 days
  • No barometer or body temperature sensor despite the band targeting fitness-focused users
  • A passcode cannot be set, leaving the device without any access protection
  • The band is not compatible with Windows or Mac OS X, limiting desktop pairing options
Who is this for?

This band is well-suited to everyday fitness enthusiasts who want thorough health monitoring without carrying a bulkier device on their wrist. With built-in GPS, Galileo support, and a route tracker, it works particularly well for runners, cyclists, and outdoor walkers who want to map their sessions independently. The 5 ATM water resistance and swim stroke counter make it a practical choice for swimmers, while the 150 supported exercise types and automatic activity detection cater to users who rotate across multiple training disciplines. Those who value long-lasting battery life will also find the 21-day runtime well-suited to extended trips or simply reducing how often they need to charge.

Who is this NOT for?

Users who rely on contactless payments will find this band impractical, as it lacks NFC support entirely. Those who prioritize a fully connected smartwatch experience — including the ability to answer calls from the wrist, use a passcode for device security, or sync with desktop platforms — will encounter clear limitations here, since none of these features are available. Athletes who depend on advanced sensor data such as barometric altitude changes or body temperature readings will also find the sensor set insufficient for their needs. Additionally, users who prefer wireless charging and want to avoid dealing with a proprietary cable will need to look elsewhere.

Design:

screen size 1.74"
Display type OLED/AMOLED
ATM rating 5 ATM
pixel density 336 ppi
resolution 336 x 480 px
refresh rate 60Hz
has branded damage-resistant glass
has a touch screen
Has a display
waterproof depth rating 50 m
Watch band is replaceable
width 32.49 mm
thickness 10.8 mm
height 43.27 mm
volume 15.18309684 cm³
weight 24.5 g
Always-On Display
Has sapphire glass display

The Xiaomi Smart Band 9 Pro features a 1.74″ OLED/AMOLED touchscreen with a resolution of 336 x 480 px and a pixel density of 336 ppi, running at a 60Hz refresh rate for smooth on-screen interactions. Always-On Display is supported, though the panel does not include branded damage-resistant glass or sapphire glass. The body measures 43.27 mm in height, 32.49 mm in width, and 10.8 mm in thickness, with a total volume of approximately 15.18 cm³ and a weight of just 24.5 g. Water resistance is rated at 5 ATM, corresponding to a waterproof depth of 50 m, making it suitable for swimming and water-based activities. The watch band is replaceable, allowing users to swap it out as needed.

Sensors:

has GPS
Has a heart rate monitor
Monitors blood oxygenation levels
Has a temperature sensor
Has a barometer
has a gyroscope
Has a cadence sensor
Monitors perspiration
has a compass
has an accelerometer

The Xiaomi Smart Band 9 Pro is equipped with built-in GPS for location tracking alongside a compass and accelerometer, while a gyroscope adds motion-sensing capability for more accurate movement detection. Health monitoring is handled by a heart rate monitor and a pulse oximeter for blood oxygenation tracking. The band does not include a body temperature sensor, barometer, cadence sensor, or perspiration monitor.

Activity tracking:

Detects activities automatically
Has exercise tagging
Tracks elevation
Tracks distance
Tracks steps taken
Has a route tracker
Measures pace
Tracks your sleep
Provides sleep reports
Has a stroke counter for swimming

The Xiaomi Smart Band 9 Pro covers a broad range of activity tracking capabilities, automatically detecting activities and supporting exercise tagging for easier workout logging. It tracks steps, distance, pace, and elevation, and includes a route tracker for mapping outdoor sessions. Sleep tracking is also on board, with detailed sleep reports generated after each night. For water-based workouts, the band features a swim stroke counter, rounding out a well-rounded set of tracking tools suited to varied physical activities.

Connectivity:

supports Wi-Fi
Bluetooth version 5.4
has NFC
Is compatible with Android
Is compatible with iOS
supports Galileo
supports ANT+
has a cellular module

The Xiaomi Smart Band 9 Pro connects to smartphones via Bluetooth 5.4 and is compatible with both Android and iOS devices. On the satellite navigation side, it supports the Galileo system for improved positioning accuracy. The band does not include Wi-Fi, NFC, ANT+, or a cellular module, keeping its connectivity focused on Bluetooth-based pairing with a paired phone.

Battery:

battery life 21 days
charge time 1.25 hours
has wireless charging
battery power 350 mAh
Has a solar power battery
has a rechargeable battery
has a removable battery

The Xiaomi Smart Band 9 Pro is powered by a 350 mAh rechargeable battery that delivers up to 21 days of battery life on a single charge, which takes approximately 1.25 hours to complete. The battery is not removable, and the band does not support wireless charging or solar charging.

Features:

measures VO2 max
measures resting heart rate
has fast/slow heart rate notifications
Has smart alarm
Has silent alarm
Has call control
Locates your phone
has irregular heart rate warnings
Has vibrating alerts
Has notifications
Has a stopwatch
Can be used to answer calls
Has a built-in camera remote control function
Compatible with external heart rate monitors
Has passcode

The Xiaomi Smart Band 9 Pro offers a range of health and convenience features, including VO2 max measurement, resting heart rate tracking, fast/slow heart rate notifications, and irregular heart rate warnings for ongoing cardiovascular awareness. It also supports a smart alarm and vibrating alerts, and delivers wrist notifications along with call control directly from the band, though it cannot be used to answer calls as a headset. Additional utility comes from a find-phone function, a stopwatch, a built-in camera remote shutter, and compatibility with external heart rate monitors. A silent alarm and passcode protection are not available on this model.

App & Software:

Counts how many calories you've burned
Provides activity reports
Has goal setting
Has achievements
Supports routes
number of exercises 150
Has barcode scanner on app
Can be personalised
Has music playback
Supports widgets
Has weight tracking
Tracks calorie intake
Tracks water intake
Has temperature tracking
Predicts ovulation
Predicts start date
Doesn’t require account
Has food diary
Displays fertile window notifications
Exports to email
Syncs with existing calendars
Has period notifications
Has coaching
Has exercise diary
Free app

The companion app for the Xiaomi Smart Band 9 Pro is free to use and supports a wide set of features, covering calorie burn tracking, activity reports, goal setting, achievements, and an exercise diary across 150 supported exercise types. Routes are supported alongside music playback, widgets, and app personalisation, giving users several ways to tailor the experience to their needs. On the nutrition and wellness side, the app includes food tracking with a food diary, water intake tracking, and weight tracking, though temperature tracking and a barcode scanner are not available. Menstrual health tools are also present, with ovulation prediction, start date prediction, fertile window notifications, and period notifications all included. Coaching is supported as well. The app requires an account to use and does not offer email export or calendar sync functionality.

Miscellaneous:

water resistance Water resistant
has a battery level indicator
maximum Bluetooth range 10 m
has an ambient light sensor
brightness (typical) 1200 nits
battery life (always-on display) 10days
has an external memory slot
has a socket for a 3.5 mm audio jack
Is compatible with Windows
Is compatible with Mac OS X

The Xiaomi Smart Band 9 Pro carries a water-resistant rating and features an ambient light sensor that helps the display adapt to surrounding conditions, with a typical brightness of 1200 nits for clear visibility. The maximum Bluetooth range extends to 10 m, and a battery level indicator keeps users informed of remaining charge at a glance. When running in always-on display mode, battery life is rated at 10 days. The band does not include an external memory slot or a 3.5 mm audio jack, and it is not compatible with Windows or Mac OS X.

Final Verdict

The Xiaomi Smart Band 9 Pro is a capable fitness tracker that strikes a solid balance between health monitoring depth and everyday wearability. Its 21-day battery life combined with built-in GPS and a comprehensive suite of health sensors makes it a reliable daily companion for users who want meaningful fitness data without frequent charging interruptions. While it does have gaps — most notably the absence of NFC, a passcode, and wireless charging — these are trade-offs that reflect the band's clear focus on core fitness and wellness functionality rather than full smartwatch territory. For users whose primary needs center on activity tracking, sleep analysis, and outdoor training, the Smart Band 9 Pro delivers a well-rounded and practical experience that holds up across a wide range of everyday use cases.

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