Garmin Fenix 3 vs. Polar M400 vs. Diesel On Full Guard vs. Fitbit Charge 3 vs. Apple Watch 8

 
Fenix 3
M400
On Full Guard
Charge 3
Watch 8
 GarminFenix 3Remove Buy NowPolarM400Remove Buy NowDieselOn Full GuardRemove Buy NowFitbitCharge 3Remove Buy NowAppleWatch 8Remove Buy Now

Basic Info

Suggested Price$500$200$325$150$499
Release20152014201720182022

Activity & Fitness

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

Battery

Duration50 hours to 6 weeks8 hours to 30 days1 day7 days18 hrs
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFCNA
Wi-Fi

Display

Color
Resolution218 x 218n/a454 x 45466 x 18340 x 272 or 390 x 312
Size1.2 inchesn/a1.4 inches.721 inches1.5 inches or 1.65 inches
Touch
TypeChroma LEDn/aOMOLEDOLEDAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance10 ATM3 ATMIP675 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/aAndroid Wear 2.0NAWatchOS 9
Apps
Music

All Wearables