Fitbit Alta vs. Garmin Forerunner 935 vs. Garmin 645 Music vs. Garmin Chronos vs. Apple Watch Series 4

 
Alta
Forerunner 935
645 Music
Chronos
Watch Series 4
 FitbitAltaRemove Buy NowGarminForerunner 935Remove Buy NowGarmin645 MusicRemove Buy NowGarminChronosRemove Buy NowAppleWatch Series 4Remove Buy Now

Basic Info

Suggested Price$130$500$450$1500$329
Release20162017201820182018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 daysUp to 2 weeks7 days8 daysNot Yet
Rechargeable

Compatibility

Android
iOS
Windows Phone
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a240 x 240240 x 240218 x 218384 x 480
Sizen/a1.2 inches1.2 inches1.2 inches1.78 inches
Touchn/a
TypeOLEDLCDMIPMIPMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistancen/a5 ATM5 ATM10 ATMNot Yet

Notifications

Phone
Emailsn/a
Texts

Software

Operating Systemn/aWear OSWatch OS 5
Apps
Music

All Wearables