Fitbit Flex 2 vs. Amazfit Cor vs. Diesel On Full Guard 2.5 vs. Garmin Vivosmart 4 vs. Amazfit GTS

 
Flex 2
Cor
On Full Guard 2.5
Vivosmart 4
GTS
 FitbitFlex 2Remove Buy NowAmazfitCorRemove Buy NowDieselOn Full Guard 2.5Remove Buy NowGarminVivosmart 4Remove Buy NowAmazfitGTSRemove Buy Now

Basic Info

Suggested Price$100$79.99$325$130$150
Release20162018201820182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days12 days4 days7 days14 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a80 x 160454x45448 x 128348 x 442
Sizen/a1.23 inches1.39 inches0.74 inches1.65 inches
Touchn/a
TypeLEDIPS LCDOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

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

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aWear OSWear OS
Apps
Music

All Wearables