Full specifications, features and battery life for the Xiaomi Smart Band 9 Active, Xiaomi’s entry-level fitness band with a 1.47in TFT screen, 50 sports modes and no built-in GPS.
| Manufacturer | Xiaomi |
| Type | Fitness band, no built-in GPS |
| Series | Smart Band Active |
| Predecessor | Xiaomi Smart Band 8 Active |
| Successor | Xiaomi Smart Band 11 Active |
| Dimensions | 45.9 x 26.94 x 9.99mm |
| Weight | 16.5g, excluding strap |
Specifications and features as at launch.
Xiaomi Smart Band 9 Active
A slim, simple tracker for daily activity, heart rate and sleep, with up to 18 days between charges.
RRP £15.99
€24.99
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Get it nowOrder now – Xiaomi Smart Band 9 Active Also sold direct byExpert opinion | Specifications | Battery life | Features | Further reading
Expert opinion
Smart Band 9 Active covers the basics for a newer fitness goer, with 50 sports modes including running, outdoor cycling and rowing, all-day heart rate and blood oxygen monitoring with alerts, sleep stage tracking and stress measurement. Sleep Animal analysis looks at your sleep, all-day stress and exercise before bed to explain your sleep patterns, and women’s health tracking predicts menstrual cycles. An optional luminous strap, sold separately, glows in the dark for evening runs and walks. Xiaomi claims up to 18 days of battery life in typical use and 9 days under heavy load, so most owners will charge it every week or two. The 1.47in screen is TFT rather than AMOLED, the vibration motor is a basic ERM type, and there is no built-in GPS. Xiaomi lists no VO2 max, training load or on-wrist running courses, all of which Smart Band 9 offers. Smart Band 9 Active suits walkers, gym members and anyone buying a first fitness tracker who wants long battery life in a light, slim band.
Specifications
| Display | |
|---|---|
| Type | TFT, reinforced glass cover |
| Size | 1.47in |
| Resolution | 172 x 320px, 247 PPI |
| Refresh rate | 60Hz |
| Physical | |
| Dimensions | 45.9 x 26.94 x 9.99mm, excluding strap and protrusions |
| Weight | 16.5g, excluding strap |
| Frame | Replaceable |
| Strap | TPU, fits 135 to 215mm wrists |
| Water resistance | 5 ATM / 50m (ISO 22810:2010) |
| Colours | Black, Beige White, Pink, Purple, Green |
| Sensors and positioning | |
| Positioning | No built-in GPS |
| Optical heart rate | PPG sensor |
| Other sensors | Accelerometer |
| © the5krunner. Link required. | |
| Connectivity and battery | |
| Wireless | Bluetooth 5.3 BLE |
| Haptics | ERM motor |
| Battery | 300mAh |
| Battery, typical use | Up to 18 days claimed |
| Battery, heavy use | Up to 9 days claimed |
| Charging | Magnetic, less than 2 hours for a full charge |
| Compatibility | Android 8.0 and above, iOS 14.0 and above |
Battery life
Xiaomi claims up to 18 days in typical use from the 300mAh battery, 29% more than Smart Band 8 Active. That test checks heart rate every 30 minutes, leaves advanced sleep, breathing score, all-day stress and all-day blood oxygen monitoring switched off, and records 60 minutes of exercise a week. The heavy-load claim of 9 days turns on advanced sleep and breathing monitoring, checks heart rate every minute, more than doubles screen wake-ups and records 90 minutes of exercise a week. Anyone using the full sleep tools and exercising most days should expect a charge every week or so.
Features
Full feature detail is covered on the Xiaomi specifications index.
Sport and training
- Fifty sports modes cover running, outdoor cycling, rowing and more, indoors or out.
- Xiaomi lists motion trajectory tracking and exercise calorie burn among the sports features, although the band has no GPS of its own.
- Water resistance of 5 ATM covers pool and shallow-water use.
- An optional luminous strap, sold separately, absorbs light during the day and glows in the dark for evening runs.
Health and recovery
- All-day heart rate monitoring can alert you to abnormal heart rate, with measurement every 1, 10 or 30 minutes or smart monitoring.
- All-day blood oxygen monitoring can vibrate to warn of low readings.
- Sleep tracking records deep, light and REM sleep.
- Sleep Animal analysis uses your sleep, all-day stress and exercise before bed to explain your sleep patterns.
- Stress measurement and women’s health tracking, including cycle prediction, round out the health tools.
Smart features
- More than 100 watch faces and a replaceable frame let you change the look.
- Widgets include alarm, timer, stopwatch, flashlight, weather and find phone.
- Music and camera control work with some Android phones and with iPhones, and event alerts need a Xiaomi or Redmi phone on Android.
Compatibility
- The band pairs through the Mi Fitness app with Android 8.0 and above or iOS 14.0 and above.
Further reading
- Xiaomi specifications index
- Xiaomi Smart Band 9 specifications
- Xiaomi Smart Band 10 specifications
- Sports watch specifications
Small things I always use
- Garmin 90-degree charging adapter: Charges your Garmin from any USB-C cable. Essential when travelling. I use one.
- Body Glide: The blue anti-chafe stick swimmers and runners carry. I use it.
- Speedo earplugs: Fewer ear infections and no cold-water dizziness. I use them.
- Dryrobe Advance: My winter changing robe for open-water swims. I use one. A cheaper option is the AONYIYI changing robe.
- Maurten: Race fuel that stays easy on the stomach. I use them.
- Beet It Sport nitrate shots: Beetroot shots I take in the days before a race. I use them.
- Garmin charging puck: The quickest way to top up before a session. I use one.
- Injinji: Toe socks that stop rubbing, so you run more. I use them.
- Ultimate toe protectors: Stop black toenails on long runs. They work. I use them.
- Compressport R2 v2 calf sleeves: My calf sleeves of choice. I use them.
- Cellucor C4: My pre-workout before hard sessions.
- TPU tubes: Schwalbe Aerothan, Tubolito and Pirelli SmarTube. Light, tiny spares. I use all three.
- G8 insoles: Adjustable insoles that are good. I use them.
- Cycplus Cube: A 97g electric pump that gets a road tyre rideable in two minutes. I carry one. 5% off with code THE5KRUNNER.
Watches and sensors
- Polar H10: My daily driver for waking HRV.
- Polar Verity Sense: My backup arm-worn HR sensor.
- Nomad bedside charger: Charges my iPhone and Apple Watch overnight. I use it, and many of their bands.
- Train.Red: The best muscle oxygen sensor I’ve used.
- Tymewear: Accurate heart rate and reliable ventilatory zones. I use it to pace endurance rides over an hour.
- Garmin Forerunner 970: A pro-grade triathlon watch. I use this.
- Apple Watch Ultra 4: My daily smartwatch. No phone needed on rides.
- Garmin Fenix 9 Pro: I’ve just bought one.
On the bike
- Continental GP5000 for everyday riding, and Aero 111 on the front for special occasions.
- Helmets: Specialized S-Works Evade 3 for road riding, and Rudy Project Wing for TT-style races. I use both.
- Ravemen FR300: A front light that mounts under your Garmin or Wahoo. I use one.
- Wahoo TRACKR Radar: I use it on one bike and Varia on the other. They perform the same.
- Garmin Varia RTL515: Radar that warns you of cars from behind. I use this model.
- Wahoo ELEMNT Roam 3: The bike computer that’s easy to use. I use mine on most rides.
- Favero Assioma Pro RS2: Accurate power pedals that swap easily between bikes. I use this model.
Home and indoor training
- NPE Runn: Makes my basic treadmill smart, sending more accurate speed and distance to my watch and Zwift. I use it.
- Google Wifi: Keeps Zwift connected in my pain cave. I use it.
- Apple TV 4K: Zwift on the big screen. I use two.
- Google Nest Doorbell (wired, 2nd gen): My video doorbell, running in both Google Home and Apple Home. I use it.
Health, recovery and sleep
- FreeStyle Libre 3 Plus: Shows how my blood sugar responds to diet.
- hDrop: Measures my sweat loss in summer and indoors.
- Fourth Frontier Zone: Checks my heart under load in hard sessions.
- Oura Ring 5: My partner’s recovery tracker of choice.
- Eight Sleep: A cooling mattress cover my partner and I use nightly.
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