ASUS ZenWatch 2 vs. Garmin Forerunner 225 vs. Garmin Forerunner 235 vs. Fitbit Flex vs. Apple Watch Ultra

 
ZenWatch 2
Forerunner 225
Forerunner 235
Flex
Watch Ultra
 ASUSZenWatch 2Remove Buy NowGarminForerunner 225Remove Buy NowGarminForerunner 235Remove Buy NowFitbitFlexRemove Buy NowAppleWatch UltraRemove Buy Now

Basic Info

Suggested Price$150$300$299.99$100$799
Release20162015201720132022

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Durationn/a10 hours to 4 weeks9 days5 days36 hrs
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution320 x 320180 x 180215 x 180NA502x410 pixels
Size1.63 inches or 1.45 inch1 inch1.23 inchesNA1.92 inches
TouchNA
TypeAMOLEDn/aMIPLED

Functions

Audio Speaker22
ClockLTPO OLED Retina
Phonen/a
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP675 ATM5 ATM1 ATM10 ATM (100 Meters)

Notifications

Phonen/a
Emailsn/an/a
Textsn/an/a

Software

Operating SystemAndroid Wearn/aNAWatchOS 9
Appsn/a
Musicn/a

All Wearables