Polar M600 vs. Polar Loop 2 vs. Fitbit Flex vs. Apple Watch Series 4 vs. Fitbit Inspire HR

 
M600
Loop 2
Flex
Watch Series 4
Inspire HR
 PolarM600Remove Buy NowPolarLoop 2Remove Buy NowFitbitFlexRemove Buy NowAppleWatch Series 4Remove Buy NowFitbitInspire HRRemove Buy Now

Basic Info

Suggested Price$330$120$100$329$99
Release20162015201320182019

Activity & Fitness

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

Battery

Duration2 days8 days (without notifications)5 daysNot Yet5 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution240 x 240n/aNA384 x 480139 x 60
Size1.3 inchesn/aNA1.78 inches1.4 inches
Touchn/aNA
TypeTFTLEDLEDMicroLEDOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX82 ATM1 ATMNot Yet5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid Wearn/aNAWatch OS 5Fitbit OS
Apps
Music

All Wearables