Garmin Forerunner 225 vs. Fitbit Alta vs. Garmin 645 Music vs. Fitbit Flex vs. Apple Watch 8

 
Forerunner 225
Alta
645 Music
Flex
Watch 8
 GarminForerunner 225Remove Buy NowFitbitAltaRemove Buy NowGarmin645 MusicRemove Buy NowFitbitFlexRemove Buy NowAppleWatch 8Remove Buy Now

Basic Info

Suggested Price$300$130$450$100$499
Release20152016201820132022

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration10 hours to 4 weeks5 days7 days5 days18 hrs
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution180 x 180n/a240 x 240NA340 x 272 or 390 x 312
Size1 inchn/a1.2 inchesNA1.5 inches or 1.65 inches
Touchn/aNA
Typen/aOLEDMIPLEDAMOLED

Functions

Audio Speaker22
Clock
Phonen/a
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMn/a5 ATM1 ATM5 ATM

Notifications

Phonen/a
Emailsn/an/a
Textsn/a

Software

Operating Systemn/an/aNAWatchOS 9
Appsn/a
Musicn/a

All Wearables