Fitbit Alta vs. Apple Watch Series 2 vs. Garmin 645 Music vs. Garmin Forerunner 235 vs. Garmin VivoActive 4

 
Alta
Watch Series 2
645 Music
Forerunner 235
VivoActive 4
 FitbitAltaRemove Buy NowAppleWatch Series 2Remove Buy NowGarmin645 MusicRemove Buy NowGarminForerunner 235Remove Buy NowGarminVivoActive 4Remove Buy Now

Basic Info

Suggested Price$130$269$450$299.99$349
Release20162016201820172019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days18 hours7 days9 days8 days
Rechargeable

Compatibility

Android
iOS
Windows Phone
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a340 x 272 or 390 x 312240 x 240215 x 180260 x 260
Sizen/a1.5 inches or 1.65 inches1.2 inches1.23 inches1.3ionches
Touchn/a
TypeOLEDAMOLEDMIPMIPMIP

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistancen/a5ATM5 ATM5 ATM5 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating Systemn/aWatch OSWear OS
Apps
Music

All Wearables