ASUS ZenWatch 2 vs. Polar M400 vs. Jaybird Reign vs. Garmin Vivosmart 4 vs. Fitbit Sense 2

 
ZenWatch 2
M400
Reign
Vivosmart 4
Sense 2
 ASUSZenWatch 2Remove Buy NowPolarM400Remove Buy NowJaybirdReignRemove Buy NowGarminVivosmart 4Remove Buy NowFitbitSense 2Remove Buy Now

Basic Info

Suggested Price$150$200$150$130$300
Release20162014201520182022

Activity & Fitness

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

Battery

Durationn/a8 hours to 30 days5 days7 days6 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution320 x 320n/aNA48 x 128336x336
Size1.63 inches or 1.45 inchn/aNA0.74 inches1.59 inches
TouchNA
TypeAMOLEDn/aLEDOLEDAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP673 ATMNA5 ATM5 ATM

Notifications

Phone
Emailsn/a
Textsn/a

Software

Operating SystemAndroid Wearn/aNA
Apps
Music

All Wearables