Garmin Forerunner 225 vs. Garmin Vivofit 4 vs. Michael Kors Access Sofie HR vs. Garmin Vivosmart 4 vs. Amazfit T-Rex

 
Forerunner 225
Vivofit 4
Access Sofie HR
Vivosmart 4
T-Rex
 GarminForerunner 225Remove Buy NowGarminVivofit 4Remove Buy NowMichael KorsAccess Sofie HRRemove Buy NowGarminVivosmart 4Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$300$79.95$395$130$140
Release20152018201920182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration10 hours to 4 weeks1 year2 days7 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Macn/a
Windowsn/a

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution180 x 18088 x 88390 x 39048 x 128360 x 360
Size1 inchNA1.19 inches0.74 inches1.3 inches
Touch
Typen/aNAOMOLEDOLEDAMOLED

Functions

Audio Speaker22
Clock
Phonen/a
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATM0.3 ATM5 ATM5 ATM

Notifications

Phonen/a
Emailsn/a
Textsn/a

Software

Operating Systemn/aWear OSBuild-in
Appsn/a
Musicn/a

All Wearables