Apple Watch vs. Garmin 645 Music vs. Apple Watch Series 4 vs. Garmin Forerunner 45 vs. Garmin Vivosmart 4

 
Watch
645 Music
Watch Series 4
Forerunner 45
Vivosmart 4
 AppleWatchRemove Buy NowGarmin645 MusicRemove Buy NowAppleWatch Series 4Remove Buy NowGarminForerunner 45Remove Buy NowGarminVivosmart 4Remove Buy Now

Basic Info

Suggested Price$349$450$329$199$130
Release20152018201820192018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration18 hours7 daysNot Yet7 days7 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution340 x 272 or 390 x 312240 x 240384 x 480208 x 20848 x 128
Size1.5 inches or 1.65 inches1.2 inches1.78 inches1.04 inches0.74 inches
Touch
TypeAMOLEDMIPMicroLEDLCDOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX75 ATMNot Yet5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemWatch OSWatch OS 5Built-in
Apps
Music

All Wearables