Apple Watch vs. Asus ZenWatch vs. Fitbit Flex vs. Apple Watch Series 4 vs. Fitbit Inspire HR

 
Watch
ZenWatch
Flex
Watch Series 4
Inspire HR
 AppleWatchRemove Buy NowAsusZenWatchRemove Buy NowFitbitFlexRemove Buy NowAppleWatch Series 4Remove Buy NowFitbitInspire HRRemove Buy Now

Basic Info

Suggested Price$349$150$100$329$99
Release20152014201320182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration18 hoursNA5 daysNot Yet5 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNANANA
MacNANA
WindowsNANA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution340 x 272 or 390 x 312320 x 320NA384 x 480139 x 60
Size1.5 inches or 1.65 inches1.63 inchesNA1.78 inches1.4 inches
TouchNA
TypeAMOLEDAMOLEDLEDMicroLEDOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX7IP551 ATMNot Yet5 ATM

Notifications

Phone
EmailsNA
TextsNA

Software

Operating SystemWatch OSAndroid WearNAWatch OS 5Fitbit OS
Apps
Music

All Wearables