Fitbit Ionic vs. Garmin Fenix 5x Plus vs. Fitbit Flex vs. Garmin Vivofit 4 vs. Amazfit T-Rex

 
Ionic
Fenix 5x Plus
Flex
Vivofit 4
T-Rex
 FitbitIonicRemove Buy NowGarminFenix 5x PlusRemove Buy NowFitbitFlexRemove Buy NowGarminVivofit 4Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$299$850$100$79.95$140
Release20172018201320182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration4+ days20 days5 days1 year20 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution348x250240 x 240NA88 x 88360 x 360
Size1.421.2 inchesNANA1.3 inches
TouchNA
TypeOLEDMIPLEDNAAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance50m10 ATM1 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemFitbit OSWear OSNABuild-in
Apps
Music

All Wearables