ASUS ZenWatch 2 vs. ASUS ZenWatch 3 vs. Fitbit Flex vs. Apple Watch Series 4 vs. Apple Watch Ultra

 
ZenWatch 2
ZenWatch 3
Flex
Watch Series 4
Watch Ultra
 ASUSZenWatch 2Remove Buy NowASUSZenWatch 3Remove Buy NowFitbitFlexRemove Buy NowAppleWatch Series 4Remove Buy NowAppleWatch UltraRemove Buy Now

Basic Info

Suggested Price$150$229$100$329$799
Release20162017201320182022

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Durationn/a48 hours5 daysNot Yet36 hrs
Rechargeable

Compatibility

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

Connectivity

BluetoothYes
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution320 x 320400 x 400NA384 x 480502x410 pixels
Size1.63 inches or 1.45 inch1.39 inchesNA1.78 inches1.92 inches
TouchNA
TypeAMOLEDAMOLEDLEDMicroLED

Functions

Audio Speaker
ClockLTPO OLED Retina
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP671 ATMNot Yet10 ATM (100 Meters)

Notifications

Phone
Emailsn/a
Textsn/a

Software

Operating SystemAndroid WearAndroid Wear 2NAWatch OS 5WatchOS 9
Apps
Music

All Wearables