Fitbit Flex 2 vs. Fitbit Ionic vs. Garmin Chronos vs. Garmin Vivosmart HR Plus vs. Amazfit T-Rex

 
Flex 2
Ionic
Chronos
Vivosmart HR Plus
T-Rex
 FitbitFlex 2Remove Buy NowFitbitIonicRemove Buy NowGarminChronosRemove Buy NowGarminVivosmart HR PlusRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$100$299$1500$179$140
Release20162017201820172019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days4+ days8 days5 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a348x250218 x 218160 x 68360 x 360
Sizen/a1.421.2 inches0.5 inches x 0.8 inches1.3 inches
Touchn/a
TypeLEDOLEDMIPLCDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM50m10 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aFitbit OSWear OSNABuild-in
Apps
Music

All Wearables