M4 Smarts Band Waterproof Fitness Tracker Watch

Specifications

Weight22.1g

Water Resistance Rating5 ATM

Display TypeAMOLED

Screen Size0.95″

Resolution120 x 240 RGB

Colour Depth24bit

Screen BrightnessUp to 400 nits (max brightness), brightness adjustable

Touchscreen typeOn-cell capacitive touchscreen

Screen protection2.5D tempered glass with anti-fingerprint coating

ButtonSingle touch button (wake up, go back)

Wrist strap typeRemovable wrist strap
(Mi Smart Band 4 is compatible with Mi Band 3 straps)

Wristband width18mm

Wrist strap materialThermoplastic polyurethane

Adjustable wrist strap length155-216mm

RAM512KB

ROM16MB

Sensors3-axis accelerometer + 3-axis gyroscope;
PPG heart rate sensor;
Capacitive proximity sensor

Wireless connectivityBT5.0 BLE

BatteryLiPo, 135mAh

Charging Type2Pin Pogo Pin

Charging time≤ 2 hours

Standby timeUp to 20 days

Motor TypeRotor

Body materialPolycarbonate

AppMi Fit

System requirementsAndroid 4.4, iOS 9.0 or above

Features

Sport Functions6 workout modes: Treadmill, exercise, outdoor running,
cycling, walking, pool swimming; Count steps, distance,
and calories burned

Health monitoringWorkout completion notifications, goal setting, sleep monitoring,
heart rate monitoring, all-day heart rate checking, resting
heart rate, heart rate chart, idle alerts

Other featuresAlarm, proximity sensor, 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, Bluetooth broadcasting, battery level display, different
ways to wear, OTA updates

Package contents

• Mi Smart Band 4 X 1
• Wrist strap X 1

• Specialised charging cable X 1
• User guide X 1

Step up, live more

Full colour display and heart rate monitor

Your transformation begins now.

• Full colour AMOLED
  touch display

  View call, text, and
  app notifications

• Activity and
  swim tracking

  Water resistant up to 50m*；
  3-axis accelerometer,
  3-axis gyroscope

• Up to 20 days
  battery*

  A single charge lasts
  up to 20 days.

• Health
  monitoring

  24/7 heart rate
  monitoring
  and sleep tracking.

A BEAUTIFUL TRANSFORMATION

Get a wider, more colourful
view right on your wrist.

The all-new full colour AMOLED touch display
that’s 39.9% larger* and brighter than ever before.

Instantly view call, text, app notifications and music in play.
Keep your hands free as you keep up with life.

* Support for local languages will be added later via OTA update.

A MOTIVATIONAL
TRANSFORMATION

Your personal trainer is with
you every step of the way.

• Swimming

  5 ATM water resistant up to 50m
  Recognizes 5 different swim styles
  Records 12 data sets including swimming pace and stroke count

  

• Power walking

  5 core data sets
  Helps you improve power walking efficiency

  

• Cycling

  Check your heart rate in real time to make sure you get the best workout
  as you climb mountain roads or dash around the city.

  

• Battle ropes

  Whether you’re doing high-speed battle rope training or an aerobic battle rope workout,
  Mi Smart Band 4 will track your heart rate, calories burned and more.

  

• Running

  Tracks your pace and step count
  Maintain a safe workout, whether you’re running short or long distance.

  

• Swimming

  5 ATM water resistant up to 50m
  Recognizes 5 different swim styles
  Records 12 data sets including swimming pace and stroke count

  

• Power walking

  5 core data sets
  Helps you improve power walking efficiency

  

• Cycling

  Check your heart rate in real time to make sure you get the best workout
  as you climb mountain roads or dash around the city.

  

• Battle ropes

  Whether you’re doing high-speed battle rope training or an aerobic battle rope workout,
  Mi Smart Band 4 will track your heart rate, calories burned and more.

  

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A REINVIGORATED TRANSFORMATION

Improving your daily energy starts with
understanding your sleep patterns.

Sleep monitoring

Accurately tracks light and deep sleep
as well as heart rate during sleep
to help you adjust your sleep patterns.

Wristband alarm

A light vibration gently wakes you
up for a more comfortable morning.

Mi Fit app

Records your health data to help you get the most out of life.

A POWERFUL TRANSFORMATION

24/7 Heart rate monitoring
keeps you safe and healthy.

24/7 Heart rate
monitoring

Safeguard your health at all times.
Alerts you when your heart rate is too high.

Idle alerts

Stay active as you get reminders
to get up and get moving.