Polar M430 vs. Garmin 645 Music vs. Fitbit Flex vs. Michael Kors Access Runway vs. Garmin VivoActive 4

 
M430
645 Music
Flex
Access Runway
VivoActive 4
 PolarM430Remove Buy NowGarmin645 MusicRemove Buy NowFitbitFlexRemove Buy NowMichael KorsAccess RunwayRemove Buy NowGarminVivoActive 4Remove Buy Now

Basic Info

Suggested Price$255$450$100$350$349
Release20172018201320182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration30 hours7 days5 days1 day8 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution128x128240 x 240NA390 x 390260 x 260
Size1.4 inch1.2 inchesNA1.19 inches1.3ionches
TouchNA
TypeLCDMIPLEDAMOLEDMIP

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceWR305 ATM1 ATM3 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemNAWear OSWear OS
Apps
Music

All Wearables