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Mi Smart Band 4

Do More, Play More, Live More


  • Color AMOLED
    full-touch display

  • Water resistant up to 50m

  • Music and
    volume controls

  • Unlimited
    watch faces

  • Up to 20 days
    of battery life

  • 24/7 heart

  • Swim tracking
    with stroke recognition

  • Daily activity



Bringing you the next revolutionary Mi Smart Band 4.


The Mi Smart Band 4 features a 39.9%* wider, full-color AMOLED touch display.
With 5 adjustable brightness levels up to 400 nits, you can view the screen clearly even in broad daylight.

Smart music and volume controls

Don't stop your workout for anything.
Change the song, adjust the volume from your Mi Smart Band 4 effortlessly.


Capable of recording 12 different data sets including the pace of your swimming, stroke count, distance and more.

Mi Smart Band 4

Along with tracking GPS, know your heart rate, pace, intensity and calories burned in order to improve your walking efficiency each time.

Mi Smart Band 4

Capable of recording pace, distance, heart rate and intensity in order to help you improve your regimen.

Mi Smart Band 4

Optimize your workout whether you're doing a vigorous uphill climb or dashing around the city.

Mi Smart Band 4

Deftly mixing fashion and features into a single wearable device, the Mi Smart Band 4 allows you to change the display according to your mood. You can also select a picture from your gallery or click one and make it your watch face .


The Mi Smart Band 4 times your different sleep cycles - light and deep along with your heart rate. This provides a comprehensive sleep analysis, so you can change your sleeping behaviours
as needed.


Wake up the smart way with Mi Smart Band 4. A light vibration is entrusted to wake you gently, so you are not hurried or hassled as you start your morning.


Get round the clock heart rate monitoring, as the Mi Smart Band 4 provides timely alerts and keeps a check on your health.


The Mi Smart Band 4 displays calls allowing you to silence/reject them without having to reach out for your phone. With the wider screen now don't miss out on important messages.

Zepp Life App

The Zepp Life App comes with a plethora of features to aid you on your fitness journey. The interface allows you to track vital metrics and customize your workout to suit your needs. Sync the data and integrate it to your daily life in no time.


The Mi Smart Band 4 comes with a massive upgrade and huge range of features that not only keep a check on your health but also helps in improving your lifestyle.

  • Mi Smart Band 4

    View messages

  • Mi Smart Band 4

    Call display / rejection

  • Mi Smart Band 4

    Vibrating alarm

  • Mi Smart Band 4

    App notifications

  • Mi Smart Band 4

    Idle alert

  • Mi Smart Band 4

    Event reminder

  • Mi Smart Band 4

    Heart rate monitor

  • Mi Smart Band 4

    Sleep monitor

  • Mi Smart Band 4

    Real-time activity tracker

  • Mi Smart Band 4

    Phone locator

  • Mi Smart Band 4

    Unlock your phone

  • Mi Smart Band 4

    More functions

Mi Smart Band 4
Now in India @ ₹2,299

Be More with the Mi Smart Band 4

Your journey to fitness begins with the Mi Smart Band 4. With 6 workout modes to choose from, your every activity is tracked with accurate data reports for you to study and further your improve your regimen. These activities include pool swimming, outdoor running, cycling, treadmill, exercise and walking. The key improvement in pool swimming allows you to track laps, strokes and distance.

• Water-resistant at a depth of up to 50m
• Full-touch color rich AMOLED display makes everything easily readable
• Workout stress free, as the Mi Smart Band 4 has a battery life of up to 20 days
• Sport your style with the unlimited watch faces
• This fitness Mi Smart band 4 comes with a choice of daily health tracking features including 24/7 heart monitor, sleep tracker and more
• You can note all the data and use it to continuously improve your routine using the Mi Fit App

It’s time to get fit with the Mi Smart Band 4!

*Please note that all functions, features, specs and any other product information provided on any Xiaomi and subsidiary the platform, including but not limited to, benefits, design, pricing, components, performance, availability and capabilities describing the product are subject to change and changed by the company when deemed necessary without any notice or obligation.
Mi Smart Band 4
Water Resistance Rating:
Display Type:
Screen Size:
0.95 inches
120 x 240 RGB
Screen Brightness:
Up to 400 nits (max brightness), brightness adjustable
Touchscreen type:
On-cell capacitive touchscreen
Screen protection:
2.5D tempered glass with anti-fingerprint coating
Single touch button (wake up, go back)
Wrist strap type:
Removable wrist strap
(Mi Smart Band 4 is compatible with Mi Band 3 straps)
130° Wide Angle
Wrist strap material:
Thermoplastic polyurethane
Adjustable wrist strap length:
3-axis accelerometer + 3-axis gyroscope;
PPG heart rate sensor;
Capacitive wear monitoring sensor
Wireless connectivity:
Bluetooth 5.0 BLE
LiPo, 135mAh
Charging Type:
2-Pin Pogo Pin
Charging time:
≤ 2 hours
Standby time:
≥ 20 days
Body material:
130° Wide Angle
Zepp Life
System requirements:
Android 4.4, iOS 9.0 or above
Sport Functions:
6 workout modes: Treadmill, exercise, outdoor running, cycling, walking, pool swimming; Count steps, distance, and calories burned
Health monitoring:
Workout completion notifications, goal setting, sleep monitoring, heart rate monitoring, all-day heart rate checking, resting heart rate, heart rate chart, idle alerts
Other features:
Alarm, pre-set watch face, customizable watch face, lock screen, timer, stopwatch, phone alarm and notifications, incoming calls, message notifications, calendar notifications, app notifications, weather forecast, Find my phone, phone unlock, event notification, Night mode, Do not disturb mode (works even without phone), music controls on band, battery level display, OTA updates
Package contents
Fitness Tracker 1 U
Wristband 1 U
Charging Cable 1 U
User Manual 1 U
  1. Does the Mi Smart Band 4 come with a heart rate sensor?

    Yes, the Mi Smart Band 4 comes with a heart rate sensor with 24/7 heart rate monitoring option available.

  2. Can the Mi Smart Band 4 be worn while swimming/under the shower?

    Yes, with 5ATM capability, the Mi Smart Band 4 is waterproof at a depth of up to 50 meters.

  3. Can the Mi Smart Band 4 be connected to an iPhone?

    Yes, the Zepp Life app is available on both Android and iOS. Please refer to the specifications for compatible versions.

  4. How do I view my sleep and activity data on the Mi Smart Band 4?

    Sleep, step, calorie and other activity data can be viewed in detail in the Zepp Life app which is available on Android and iOS on the Mi Smart Band 4.

  5. Can I use Mi Band 3 straps with Mi Smart Band 4?

    Yes, Mi Band 3 straps can be used with Mi Smart Band 4.

  6. Can I use Mi Band 3 charging cable with Mi Smart Band 4?

    No, Mi Band 3 charging cable will not be compatible with Mi Smart Band 4. A separate charging cable for Mi Smart Band 4 is available in-box on purchase of the band.

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