Fitbit Ionic vs. Casio WSD-F20A vs. Garmin Forerunner 235 vs. Amazfit T-Rex vs. Garmin VivoActive 4

 
Ionic
WSD-F20A
Forerunner 235
T-Rex
VivoActive 4
 FitbitIonicRemove Buy NowCasioWSD-F20ARemove Buy NowGarminForerunner 235Remove Buy NowAmazfitT-RexRemove Buy NowGarminVivoActive 4Remove Buy Now

Basic Info

Suggested Price$299$399$299.99$140$349
Release20172018201720192019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration4+ days1 day9 days20 days8 days
Rechargeable

Compatibility

Android
iOS
Windows Phone
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution348x250320 x 320215 x 180360 x 360260 x 260
Size1.421.32 inches1.23 inches1.3 inches1.3ionches
Touch
TypeOLEDLCDMIPAMOLEDMIP

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance50m5 ATM5 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemFitbit OSWear OSBuild-inWear OS
Apps
Music

All Wearables