Polar M400 vs. Amazfit Cor vs. Garmin Forerunner 235 vs. Fitbit Flex vs. Apple Watch Series 5

 
M400
Cor
Forerunner 235
Flex
Watch Series 5
 PolarM400Remove Buy NowAmazfitCorRemove Buy NowGarminForerunner 235Remove Buy NowFitbitFlexRemove Buy NowAppleWatch Series 5Remove Buy Now

Basic Info

Suggested Price$200$79.99$299.99$100$329
Release20142018201720132019

Activity & Fitness

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

Battery

Duration8 hours to 30 days12 days9 days5 daysNot Yet
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a80 x 160215 x 180NA384 x 480
Sizen/a1.23 inches1.23 inchesNA1.78 Inches
TouchNA
Typen/aIPS LCDMIPLEDMicroLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance3 ATM5 ATM5 ATM1 ATMNot Yet

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aNAWatchOS 5
Apps
Music

All Wearables