Fitbit Ionic vs. Garmin Fenix 5 vs. Casio WSD-F20A vs. Garmin Forerunner 235 vs. Amazfit T-Rex

 
Ionic
Fenix 5
WSD-F20A
Forerunner 235
T-Rex
 FitbitIonicRemove Buy NowGarminFenix 5Remove Buy NowCasioWSD-F20ARemove Buy NowGarminForerunner 235Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$299$599.99$399$299.99$140
Release20172017201820172019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration4+ days2 Weeks1 day9 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phone
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution348x250240 x 240320 x 320215 x 180360 x 360
Size1.421.2 inches1.32 inches1.23 inches1.3 inches
Touch
TypeOLEDnaLCDMIPAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance50m10 ATM5 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemFitbit OSWear OSBuild-in
Apps
Music

All Wearables