Polar M600 vs. Polar M430 vs. Garmin 645 Music vs. Garmin Vivoactive 3 vs. Fitbit Flex

 
M600
M430
645 Music
Vivoactive 3
Flex
 PolarM600Remove Buy NowPolarM430Remove Buy NowGarmin645 MusicRemove Buy NowGarminVivoactive 3Remove Buy NowFitbitFlexRemove Buy Now

Basic Info

Suggested Price$330$255$450$299$100
Release20162017201820172013

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 days30 hours7 days7 days5 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution240 x 240128x128240 x 240240 x 240NA
Size1.3 inches1.4 inch1.2 inches1.2 inchesNA
Touchn/aNA
TypeTFTLCDMIPMIPLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX8WR305 ATM5 ATM1 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid WearNA
Apps
Music

All Wearables