Fitbit Flex 2 vs. ASUS ZenWatch 3 vs. Fitbit Flex vs. Garmin Vivofit 4 vs. Amazfit GTS

 
Flex 2
ZenWatch 3
Flex
Vivofit 4
GTS
 FitbitFlex 2Remove Buy NowASUSZenWatch 3Remove Buy NowFitbitFlexRemove Buy NowGarminVivofit 4Remove Buy NowAmazfitGTSRemove Buy Now

Basic Info

Suggested Price$100$229$100$79.95$150
Release20162017201320182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days48 hours5 days1 year14 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Mac
Windows

Connectivity

BluetoothYes
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a400 x 400NA88 x 88348 x 442
Sizen/a1.39 inchesNANA1.65 inches
Touchn/aNA
TypeLEDAMOLEDLEDNAAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

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

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aAndroid Wear 2NAWear OS
Apps
Music

All Wearables