Polar M600 vs. Diesel On Full Guard vs. Garmin Forerunner 235 vs. Apple Watch Series 4 vs. Amazfit T-Rex

 
M600
On Full Guard
Forerunner 235
Watch Series 4
T-Rex
 PolarM600Remove Buy NowDieselOn Full GuardRemove Buy NowGarminForerunner 235Remove Buy NowAppleWatch Series 4Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$330$325$299.99$329$140
Release20162017201720182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 days1 day9 daysNot Yet20 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution240 x 240454 x 454215 x 180384 x 480360 x 360
Size1.3 inches1.4 inches1.23 inches1.78 inches1.3 inches
Touchn/a
TypeTFTOMOLEDMIPMicroLEDAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX8IP675 ATMNot Yet5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid WearAndroid Wear 2.0Watch OS 5Build-in
Apps
Music

All Wearables