Apple Watch vs. Garmin 645 Music vs. Fitbit Alta HR vs. Fitbit Flex vs. Garmin Forerunner 45

 
Watch
645 Music
Alta HR
Flex
Forerunner 45
 AppleWatchRemove Buy NowGarmin645 MusicRemove Buy NowFitbitAlta HRRemove Buy NowFitbitFlexRemove Buy NowGarminForerunner 45Remove Buy Now

Basic Info

Suggested Price$349$450$150$100$199
Release20152018201720132019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration18 hours7 days7 days5 days7 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNANA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution340 x 272 or 390 x 312240 x 240128 x 36NA208 x 208
Size1.5 inches or 1.65 inches1.2 inches1.4 inchesNA1.04 inches
TouchNA
TypeAMOLEDMIPOLEDLEDLCD

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX75 ATM1 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemWatch OSNABuilt-in
Apps
Music

All Wearables