Fitbit Alta vs. Apple Watch Series 2 vs. Garmin 645 Music vs. Garmin Vivosmart 4 vs. Fitbit Inspire 3

 
Alta
Watch Series 2
645 Music
Vivosmart 4
Inspire 3
 FitbitAltaRemove Buy NowAppleWatch Series 2Remove Buy NowGarmin645 MusicRemove Buy NowGarminVivosmart 4Remove Buy NowFitbitInspire 3Remove Buy Now

Basic Info

Suggested Price$130$269$450$130$100
Release20162016201820182022

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days18 hours7 days7 days10 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 24048 x 12832x18
Sizen/a1.5 inches or 1.65 inches1.2 inches0.74 inches46 inches
Touchn/a
TypeOLEDAMOLEDMIPOLEDAMOLED

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 OS
Apps
Music

All Wearables