Fitbit Flex 2 vs. Asus VivoWatch vs. Garmin Vivofit 4 vs. Apple Watch Series 4 vs. Amazfit T-Rex

 
Flex 2
VivoWatch
Vivofit 4
Watch Series 4
T-Rex
 FitbitFlex 2Remove Buy NowAsusVivoWatchRemove Buy NowGarminVivofit 4Remove Buy NowAppleWatch Series 4Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$100$160$79.95$329$140
Release20162018201820182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days24 hours to 10 days1 yearNot Yet20 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a128 x 12888 x 88384 x 480360 x 360
Sizen/aNANA1.78 inches1.3 inches
Touchn/a
TypeLEDNANAMicroLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or AltimeterNA
Ultraviolet Sensor
Water Resistance5 ATMIP675 ATMNot Yet5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aKoodOSWatch OS 5Build-in
Apps
Music

All Wearables