Garmin Forerunner 225 vs. Polar M400 vs. Xiaomi Mi Band 2 vs. Garmin Forerunner 45 vs. Amazfit GTR

 
Forerunner 225
M400
Mi Band 2
Forerunner 45
GTR
 GarminForerunner 225Remove Buy NowPolarM400Remove Buy NowXiaomiMi Band 2Remove Buy NowGarminForerunner 45Remove Buy NowAmazfitGTRRemove Buy Now

Basic Info

Suggested Price$300$200$23$199$199
Release20152014201620192019

Activity & Fitness

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

Battery

Duration10 hours to 4 weeks8 hours to 30 days20 hours7 days24 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/an/a
Macn/an/a
Windowsn/an/a

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution180 x 180n/an/a208 x 208454 x 454
Size1 inchn/a0.42 inches1.04 inches1.39 inches
Touch
Typen/an/aOLEDLCDAMOLED

Functions

Audio Speaker22Alerts only
Clock
Phonen/a
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM3 ATMIP675 ATM5 ATM

Notifications

Phonen/a
Emailsn/a
Textsn/a

Software

Operating Systemn/an/an/aBuilt-inBuild-in
Appsn/a
Musicn/a

All Wearables