ASUS ZenWatch 2 vs. Polar M400 vs. Garmin Forerunner 45 vs. Fitbit Inspire HR vs. HTC re Grip

 
ZenWatch 2
M400
Forerunner 45
Inspire HR
re Grip
 ASUSZenWatch 2Remove Buy NowPolarM400Remove Buy NowGarminForerunner 45Remove Buy NowFitbitInspire HRRemove Buy NowHTCre GripRemove Buy Now

Basic Info

Suggested Price$150$200$199$99$199
Release20162014201920192020

Activity & Fitness

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

Battery

Durationn/a8 hours to 30 days7 days5 days5 hours to 2.5 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/a208 x 208139 x 60160 x 32
Size1.63 inches or 1.45 inchn/a1.04 inches1.4 inches1.8 inches
Touch
TypeAMOLEDn/aLCDOLEDPMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP673 ATM5 ATM5 ATMIP57

Notifications

Phone
Emailsn/a
Textsn/a

Software

Operating SystemAndroid Wearn/aBuilt-inFitbit OSNA
Apps
Music

All Wearables