Apple Watch Series 3 vs. Garmin Fenix 3 vs. Garmin 645 Music vs. Fitbit Alta HR vs. Apple Watch Series 4

 
Watch Series 3
Fenix 3
645 Music
Alta HR
Watch Series 4
 AppleWatch Series 3Remove Buy NowGarminFenix 3Remove Buy NowGarmin645 MusicRemove Buy NowFitbitAlta HRRemove Buy NowAppleWatch Series 4Remove Buy Now

Basic Info

Suggested Price$329$500$450$150$329
Release20172015201820172018

Activity & Fitness

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

Battery

Duration18 hours50 hours to 6 weeks7 days7 daysNot Yet
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution340 x 272 or 390 x 312218 x 218240 x 240128 x 36384 x 480
Size1.5 inches or 1.65 inches1.2 inches1.2 inches1.4 inches1.78 inches
Touch
TypeAMOLEDChroma LEDMIPOLEDMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM10 ATM5 ATMNot Yet

Notifications

Phone
Emails
Texts

Software

Operating SystemWatchOS 4n/aWatch OS 5
Apps
Music

All Wearables