Motorola Moto 360 (2nd Gen) vs. Polar M400 vs. Amazfit Arc vs. Samsung Galaxy Watch vs. Xiaomi Mi Band 4

 
Moto 360 (2nd Gen)
M400
Arc
Galaxy Watch
Mi Band 4
 MotorolaMoto 360 (2nd Gen)Remove Buy NowPolarM400Remove Buy NowAmazfitArcRemove Buy NowSamsungGalaxy WatchRemove Buy NowXiaomiMi Band 4Remove Buy Now

Basic Info

Suggested Price$300$200$69.99$330$25
Release20152014201620182019

Activity & Fitness

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

Battery

Duration1.5 days8 hours to 30 days20 days7 days20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
CellularNA
GPS
NFC
Wi-Fi

Display

Color
Resolution360 x 325 or 360 x 330n/a72 x40360 x 360120x240
Size1.37 inches or 1.56 inchesn/a0.42 inches1.2 inches or 1.3 inches0.95 inches
Touch
TypeLCDn/aOLEDAMOLEDAMOLED

Functions

Audio SpeakerBluetoothAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP673 ATMIP675 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid Wearn/aTizen OSAMAZFIT OS
Apps
Musicn/aSpotify

All Wearables