Garmin Forerunner 225 vs. Fitbit Flex 2 vs. Garmin Vivosmart HR vs. Asus ZenWatch vs. Amazfit GTS

 
Forerunner 225
Flex 2
Vivosmart HR
ZenWatch
GTS
 GarminForerunner 225Remove Buy NowFitbitFlex 2Remove Buy NowGarminVivosmart HRRemove Buy NowAsusZenWatchRemove Buy NowAmazfitGTSRemove Buy Now

Basic Info

Suggested Price$300$100$170$150$150
Release20152016201520142019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration10 hours to 4 weeks5 days5 daysNA14 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/an/an/aNA
Macn/an/aNA
Windowsn/an/aNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolution180 x 180n/a160 x 68320 x 320348 x 442
Size1 inchn/a1.08 inches1.63 inches1.65 inches
Touchn/a
Typen/aLEDn/aAMOLEDAMOLED

Functions

Audio Speaker22
Clock
Phonen/a
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATM5 ATMIP555 ATM

Notifications

Phonen/a
Emailsn/aNA
Textsn/aNA

Software

Operating Systemn/an/an/aAndroid WearWear OS
Appsn/a
Musicn/a

All Wearables