Motorola Moto 360 (2nd Gen) vs. Polar M400 vs. Fitbit Flex vs. Garmin Vivosmart 4 vs. Amazfit GTS

 
Moto 360 (2nd Gen)
M400
Flex
Vivosmart 4
GTS
 MotorolaMoto 360 (2nd Gen)Remove Buy NowPolarM400Remove Buy NowFitbitFlexRemove Buy NowGarminVivosmart 4Remove Buy NowAmazfitGTSRemove Buy Now

Basic Info

Suggested Price$300$200$100$130$150
Release20152014201320182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heartn/a
Oxygen
Sleep
Steps
Swim

Battery

Duration1.5 days8 hours to 30 days5 days7 days14 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution360 x 325 or 360 x 330n/aNA48 x 128348 x 442
Size1.37 inches or 1.56 inchesn/aNA0.74 inches1.65 inches
TouchNA
TypeLCDn/aLEDOLEDAMOLED

Functions

Audio SpeakerBluetoothAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP673 ATM1 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid Wearn/aNAWear OS
Apps
Musicn/a

All Wearables