Fitbit Ionic vs. Fitbit Flex vs. Garmin Vivosmart HR Plus vs. Garmin Forerunner 45 vs. Garmin VivoActive 4

 
Ionic
Flex
Vivosmart HR Plus
Forerunner 45
VivoActive 4
 FitbitIonicRemove Buy NowFitbitFlexRemove Buy NowGarminVivosmart HR PlusRemove Buy NowGarminForerunner 45Remove Buy NowGarminVivoActive 4Remove Buy Now

Basic Info

Suggested Price$299$100$179$199$349
Release20172013201720192019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration4+ days5 days5 days7 days8 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution348x250NA160 x 68208 x 208260 x 260
Size1.42NA0.5 inches x 0.8 inches1.04 inches1.3ionches
TouchNA
TypeOLEDLEDLCDLCDMIP

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance50m1 ATM5 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemFitbit OSNANABuilt-inWear OS
Apps
Music

All Wearables