Fitbit Ionic vs. Garmin Fenix 5s vs. Asus ZenWatch vs. Fitbit Flex vs. Garmin Forerunner 45

 
Ionic
Fenix 5s
ZenWatch
Flex
Forerunner 45
 FitbitIonicRemove Buy NowGarminFenix 5sRemove Buy NowAsusZenWatchRemove Buy NowFitbitFlexRemove Buy NowGarminForerunner 45Remove Buy Now

Basic Info

Suggested Price$299$599.99$150$100$199
Release20172017201420132019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration4+ daysUp to 9 daysNA5 days7 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNANA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution348x250218x 218320 x 320NA208 x 208
Size1.421.1 inches1.63 inchesNA1.04 inches
TouchNA
TypeOLEDnaAMOLEDLEDLCD

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance50m10ATMIP551 ATM5 ATM

Notifications

Phone
EmailsNA
TextsNA

Software

Operating SystemFitbit OSAndroid WearNABuilt-in
Apps
Music

All Wearables