Apple Watch Series 3 vs. Polar M400 vs. Fitbit Ionic vs. Garmin Fenix 5x Plus vs. Xiaomi Mi Band 4

 
Watch Series 3
M400
Ionic
Fenix 5x Plus
Mi Band 4
 AppleWatch Series 3Remove Buy NowPolarM400Remove Buy NowFitbitIonicRemove Buy NowGarminFenix 5x PlusRemove Buy NowXiaomiMi Band 4Remove Buy Now

Basic Info

Suggested Price$329$200$299$850$25
Release20172014201720182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heartn/a
Oxygen
Sleep
Steps
Swim

Battery

Duration18 hours8 hours to 30 days4+ days20 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution340 x 272 or 390 x 312n/a348x250240 x 240120x240
Size1.5 inches or 1.65 inchesn/a1.421.2 inches0.95 inches
Touch
TypeAMOLEDn/aOLEDMIPAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM3 ATM50m10 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemWatchOS 4n/aFitbit OSWear OSAMAZFIT OS
Apps
Music

All Wearables