Garmin Fenix 3 vs. Fitbit Flex 2 vs. Casio WSD-F20A vs. Garmin Vivosmart HR Plus vs. Amazfit T-Rex

 
Fenix 3
Flex 2
WSD-F20A
Vivosmart HR Plus
T-Rex
 GarminFenix 3Remove Buy NowFitbitFlex 2Remove Buy NowCasioWSD-F20ARemove Buy NowGarminVivosmart HR PlusRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$500$100$399$179$140
Release20152016201820172019

Activity & Fitness

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

Battery

Duration50 hours to 6 weeks5 days1 day5 days20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolution218 x 218n/a320 x 320160 x 68360 x 360
Size1.2 inchesn/a1.32 inches0.5 inches x 0.8 inches1.3 inches
Touchn/a
TypeChroma LEDLEDLCDLCDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance10 ATM5 ATM5 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/aWear OSNABuild-in
Apps
Music

All Wearables