ASUS ZenWatch 2 vs. Fitbit Surge vs. Polar M400 vs. Fitbit Ionic vs. Fitbit Flex

 
ZenWatch 2
Surge
M400
Ionic
Flex
 ASUSZenWatch 2Remove Buy NowFitbitSurgeRemove Buy NowPolarM400Remove Buy NowFitbitIonicRemove Buy NowFitbitFlexRemove Buy Now

Basic Info

Suggested Price$150$250$200$299$100
Release20162016201420172013

Activity & Fitness

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

Battery

Durationn/a7 days8 hours to 30 days4+ days5 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution320 x 320n/an/a348x250NA
Size1.63 inches or 1.45 inch1.26 inchesn/a1.42NA
TouchNA
TypeAMOLEDMonochrome LCDn/aOLEDLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP675 ATM3 ATM50m1 ATM

Notifications

Phone
Emailsn/a
Textsn/a

Software

Operating SystemAndroid Wearn/an/aFitbit OSNA
Apps
Music

All Wearables