Fitbit Flex 2 vs. ASUS ZenWatch 3 vs. Fitbit Flex vs. Garmin Forerunner 45 vs. Garmin Vivosmart 4

 
Flex 2
ZenWatch 3
Flex
Forerunner 45
Vivosmart 4
 FitbitFlex 2Remove Buy NowASUSZenWatch 3Remove Buy NowFitbitFlexRemove Buy NowGarminForerunner 45Remove Buy NowGarminVivosmart 4Remove Buy Now

Basic Info

Suggested Price$100$229$100$199$130
Release20162017201320192018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days48 hours5 days7 days7 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Mac
Windows

Connectivity

BluetoothYes
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a400 x 400NA208 x 20848 x 128
Sizen/a1.39 inchesNA1.04 inches0.74 inches
Touchn/aNA
TypeLEDAMOLEDLEDLCDOLED

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 2NABuilt-in
Apps
Music

All Wearables