Polar M600 vs. Fitbit One vs. Casio WSD-F20A vs. Fitbit Flex vs. Garmin Vivosmart 4

 
M600
One
WSD-F20A
Flex
Vivosmart 4
 PolarM600Remove Buy NowFitbitOneRemove Buy NowCasioWSD-F20ARemove Buy NowFitbitFlexRemove Buy NowGarminVivosmart 4Remove Buy Now

Basic Info

Suggested Price$330$100$399$100$130
Release20162012201820132018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 days10-14 days1 day5 days7 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/an/aNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution240 x 240n/a320 x 320NA48 x 128
Size1.3 inchesn/a1.32 inchesNA0.74 inches
Touchn/aNA
TypeTFTOLEDLCDLEDOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX8Splast Resistant5 ATM1 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid Wearn/aWear OSNA
Apps
Music

All Wearables