Apple Watch Series 3 vs. Garmin 645 Music vs. Fitbit Alta HR vs. Apple Watch Series 4 vs. Apple SE (2022)

 
Watch Series 3
645 Music
Alta HR
Watch Series 4
SE (2022)
 AppleWatch Series 3Remove Buy NowGarmin645 MusicRemove Buy NowFitbitAlta HRRemove Buy NowAppleWatch Series 4Remove Buy NowAppleSE (2022)Remove Buy Now

Basic Info

Suggested Price$329$450$150$329$249
Release20172018201720182022

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration18 hours7 days7 daysNot YetNot yet
Rechargeable

Compatibility

Android
iOS
Windows Phone
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color368 x 448 pixels
Resolution340 x 272 or 390 x 312240 x 240128 x 36384 x 48040mm
Size1.5 inches or 1.65 inches1.2 inches1.4 inches1.78 inches
TouchLTPO OLED Retina
TypeAMOLEDMIPOLEDMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter5 ATM
Ultraviolet Sensor
Water Resistance5 ATM5 ATMNot Yet

Notifications

Phone
EmailsWatchOS 8.1
Texts

Software

Operating SystemWatchOS 4Watch OS 5
Apps
Music

All Wearables