Fitbit Flex 2 vs. Amazfit Stratos vs. Asus VivoWatch vs. Garmin Forerunner 235 vs. Fitbit Alta HR

 
Flex 2
Stratos
VivoWatch
Forerunner 235
Alta HR
 FitbitFlex 2Remove Buy NowAmazfitStratosRemove Buy NowAsusVivoWatchRemove Buy NowGarminForerunner 235Remove Buy NowFitbitAlta HRRemove Buy Now

Basic Info

Suggested Price$100$199$160$299.99$150
Release20162018201820172017

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days5 days24 hours to 10 days9 days7 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a320 x 300128 x 128215 x 180128 x 36
Sizen/a1.34 inchesNA1.23 inches1.4 inches
Touchn/a
TypeLEDOLEDNAMIPOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or AltimeterNA
Ultraviolet Sensor
Water Resistance5 ATM5 ATMIP675 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aProprietaryKoodOS
Apps
Music

All Wearables