Garmin Forerunner 225 vs. Polar V800 vs. Garmin Forerunner 935 vs. Garmin Vivosmart 4 vs. Amazfit T-Rex

 
Forerunner 225
V800
Forerunner 935
Vivosmart 4
T-Rex
 GarminForerunner 225Remove Buy NowPolarV800Remove Buy NowGarminForerunner 935Remove Buy NowGarminVivosmart 4Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$300$470$500$130$140
Release20152014201720182019

Activity & Fitness

Calories
Cycling (Bicycling)n/a
Distance
Heartn/a
Oxygen
Sleep
Steps
Swim

Battery

Duration10 hours to 4 weeks13 hours to 30 daysUp to 2 weeks7 days20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution180 x 180n/a240 x 24048 x 128360 x 360
Size1 inchn/a1.2 inches0.74 inches1.3 inches
Touch
Typen/an/aLCDOLEDAMOLED

Functions

Audio Speaker22Alerts only
Clock
Phonen/a
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM3 ATM5 ATM5 ATM5 ATM

Notifications

Phonen/a
Emailsn/a
Textsn/a

Software

Operating Systemn/an/aBuild-in
Appsn/a
Musicn/a

All Wearables