Apple Watch Series 2 vs. Garmin 645 Music vs. Fitbit Alta HR vs. Apple Watch Ultra vs. Fitbit Inspire 3

 
Watch Series 2
645 Music
Alta HR
Watch Ultra
Inspire 3
 AppleWatch Series 2Remove Buy NowGarmin645 MusicRemove Buy NowFitbitAlta HRRemove Buy NowAppleWatch UltraRemove Buy NowFitbitInspire 3Remove Buy Now

Basic Info

Suggested Price$269$450$150$799$100
Release20162018201720222022

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration18 hours7 days7 days36 hrs10 days
Rechargeable

Compatibility

Android
iOS
Windows Phone
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution340 x 272 or 390 x 312240 x 240128 x 36502x410 pixels32x18
Size1.5 inches or 1.65 inches1.2 inches1.4 inches1.92 inches46 inches
Touch
TypeAMOLEDMIPOLEDAMOLED

Functions

Audio Speaker
ClockLTPO OLED Retina
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5ATM5 ATM10 ATM (100 Meters)5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemWatch OSWatchOS 9
Apps
Music

All Wearables