Fitbit Ionic vs. Garmin Fenix 5s vs. Casio WSD-F20A vs. Fitbit Flex vs. Apple Watch Series 4

 
Ionic
Fenix 5s
WSD-F20A
Flex
Watch Series 4
 FitbitIonicRemove Buy NowGarminFenix 5sRemove Buy NowCasioWSD-F20ARemove Buy NowFitbitFlexRemove Buy NowAppleWatch Series 4Remove Buy Now

Basic Info

Suggested Price$299$599.99$399$100$329
Release20172017201820132018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration4+ daysUp to 9 days1 day5 daysNot Yet
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution348x250218x 218320 x 320NA384 x 480
Size1.421.1 inches1.32 inchesNA1.78 inches
TouchNA
TypeOLEDnaLCDLEDMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance50m10ATM5 ATM1 ATMNot Yet

Notifications

Phone
Emails
Texts

Software

Operating SystemFitbit OSWear OSNAWatch OS 5
Apps
Music

All Wearables