Casio WSD-F10 vs. Casio WSD-F20A vs. Fitbit Flex vs. Polar A370 vs. Garmin Vivosmart 4

 
WSD-F10
WSD-F20A
Flex
A370
Vivosmart 4
 CasioWSD-F10Remove Buy NowCasioWSD-F20ARemove Buy NowFitbitFlexRemove Buy NowPolarA370Remove Buy NowGarminVivosmart 4Remove Buy Now

Basic Info

Suggested Price$500$399$100$179.95$130
Release20162018201320172018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heartn/a
Oxygenn/a
Sleepn/a
Steps
Swimn/a

Battery

Durationn/a1 day5 daysUp to 3 days7 days
Rechargeable

Compatibility

Android
iOSn/a
Windows Phonen/aNA
Macn/a
Windowsn/a

Connectivity

Bluetoothn/a
Cellularn/a
GPS
NFCn/a
Wi-Fin/a

Display

Color
Resolutionn/a320 x 320NA160 x 8048 x 128
Sizen/a1.32 inchesNA1.18 inches0.74 inches
Touchn/aNA
TypeLCDLCDLEDTFT LCDOLED

Functions

Audio Speakern/a
Clock
Phonen/a
Vibration
Voicen/a

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATM1 ATMWR305 ATM

Notifications

Phonen/a
Emailsn/a
Textsn/a

Software

Operating SystemAndroid WearWear OSNA
Appsn/a
Musicn/a

All Wearables