Fitbit Flex 2 vs. Fitbit Flex vs. Garmin Vivosmart HR Plus vs. Diesel On Full Guard 2.5 vs. Amazfit T-Rex

 
Flex 2
Flex
Vivosmart HR Plus
On Full Guard 2.5
T-Rex
 FitbitFlex 2Remove Buy NowFitbitFlexRemove Buy NowGarminVivosmart HR PlusRemove Buy NowDieselOn Full Guard 2.5Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$100$100$179$325$140
Release20162013201720182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days5 days5 days4 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/aNA160 x 68454x454360 x 360
Sizen/aNA0.5 inches x 0.8 inches1.39 inches1.3 inches
Touchn/aNA
TypeLEDLEDLCDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM1 ATM5 ATM3 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aNANAWear OSBuild-in
Apps
Music

All Wearables