Garmin Forerunner 225 vs. Polar M400 vs. Amazfit Cor vs. Garmin 645 Music vs. Fitbit Versa 2

 
Forerunner 225
M400
Cor
645 Music
Versa 2
 GarminForerunner 225Remove Buy NowPolarM400Remove Buy NowAmazfitCorRemove Buy NowGarmin645 MusicRemove Buy NowFitbitVersa 2Remove Buy Now

Basic Info

Suggested Price$300$200$79.99$450$199
Release20152014201820182019

Activity & Fitness

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

Battery

Duration10 hours to 4 weeks8 hours to 30 days12 days7 days5 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution180 x 180n/a80 x 160240 x 240300 x 300
Size1 inchn/a1.23 inches1.2 inches1.34 inches
Touch
Typen/an/aIPS LCDMIPAMOLED

Functions

Audio Speaker22Alerts only
Clock
Phonen/a
Vibration
Voice

Hardware

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

Notifications

Phonen/a
Emailsn/a
Textsn/a

Software

Operating Systemn/an/aBuild-in
Appsn/a
Musicn/a

All Wearables