Garmin Vivoactive vs. Garmin 645 Music vs. Fitbit Alta HR vs. Apple Watch 8 vs. Apple Watch Ultra

 
Vivoactive
645 Music
Alta HR
Watch 8
Watch Ultra
 GarminVivoactiveRemove Buy NowGarmin645 MusicRemove Buy NowFitbitAlta HRRemove Buy NowAppleWatch 8Remove Buy NowAppleWatch UltraRemove Buy Now

Basic Info

Suggested Price$250$450$150$499$799
Release20152018201720222022

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration14 hours to 11 days7 days7 days18 hrs36 hrs
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Macn/a
Windowsn/a

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution205 x 148240 x 240128 x 36340 x 272 or 390 x 312502x410 pixels
Size1.38 inches1.2 inches1.4 inches1.5 inches or 1.65 inches1.92 inches
Touch
TypeLCDMIPOLEDAMOLED

Functions

Audio Speaker
ClockLTPO OLED Retina
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATM5 ATM10 ATM (100 Meters)

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aWatchOS 9WatchOS 9
Apps
Music

All Wearables