Fitbit Ionic vs. Asus VivoWatch vs. Fitbit Flex vs. Garmin Forerunner 45 vs. Apple Watch 7

 
Ionic
VivoWatch
Flex
Forerunner 45
Watch 7
 FitbitIonicRemove Buy NowAsusVivoWatchRemove Buy NowFitbitFlexRemove Buy NowGarminForerunner 45Remove Buy NowAppleWatch 7Remove Buy Now

Basic Info

Suggested Price$299$160$100$199$429
Release20172018201320192021

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration4+ days24 hours to 10 days5 days7 days18 Hours
Rechargeable

Compatibility

Android
iOS
Windows PhoneNANA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution348x250128 x 128NA208 x 208396 x 484
Size1.42NANA1.04 inches1.9 inches
TouchNA
TypeOLEDNALEDLCDMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or AltimeterNA
Ultraviolet Sensor
Water Resistance50mIP671 ATM5 ATMwater resistant but not waterproof

Notifications

Phone
Emails
Texts

Software

Operating SystemFitbit OSKoodOSNABuilt-inWatchOS 8
Apps
Music

All Wearables