Fitbit Flex 2 vs. Microsoft Band 2 vs. ASUS ZenWatch 3 vs. Polar A370 vs. Garmin Vivosmart 4

 
Flex 2
Band 2
ZenWatch 3
A370
Vivosmart 4
 FitbitFlex 2Remove Buy NowMicrosoftBand 2Remove Buy NowASUSZenWatch 3Remove Buy NowPolarA370Remove Buy NowGarminVivosmart 4Remove Buy Now

Basic Info

Suggested Price$100$250$229$179.95$130
Release20162015201720172018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days48 hours (without GPS)48 hoursUp to 3 days7 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Macn/a
Windowsn/a

Connectivity

BluetoothYes
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a320 x 128400 x 400160 x 8048 x 128
Sizen/a1.36 inches1.39 inches1.18 inches0.74 inches
Touchn/a
TypeLEDCapacitative TFTAMOLEDTFT LCDOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMIPX7WR305 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/aAndroid Wear 2
Apps
Music

All Wearables