Fitbit Flex 2 vs. Fitbit Ionic vs. Garmin Fenix 5 vs. Diesel On Full Guard vs. Garmin VivoActive 4

 
Flex 2
Ionic
Fenix 5
On Full Guard
VivoActive 4
 FitbitFlex 2Remove Buy NowFitbitIonicRemove Buy NowGarminFenix 5Remove Buy NowDieselOn Full GuardRemove Buy NowGarminVivoActive 4Remove Buy Now

Basic Info

Suggested Price$100$299$599.99$325$349
Release20162017201720172019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days4+ days2 Weeks1 day8 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a348x250240 x 240454 x 454260 x 260
Sizen/a1.421.2 inches1.4 inches1.3ionches
Touchn/a
TypeLEDOLEDnaOMOLEDMIP

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM50m10 ATMIP675 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aFitbit OSAndroid Wear 2.0Wear OS
Apps
Music

All Wearables