Garmin Forerunner 225 vs. Fitbit Alta vs. Amazfit Stratos vs. Garmin 645 Music vs. Apple Watch 7

 
Forerunner 225
Alta
Stratos
645 Music
Watch 7
 GarminForerunner 225Remove Buy NowFitbitAltaRemove Buy NowAmazfitStratosRemove Buy NowGarmin645 MusicRemove Buy NowAppleWatch 7Remove Buy Now

Basic Info

Suggested Price$300$130$199$450$429
Release20152016201820182021

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration10 hours to 4 weeks5 days5 days7 days18 Hours
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution180 x 180n/a320 x 300240 x 240396 x 484
Size1 inchn/a1.34 inches1.2 inches1.9 inches
Touchn/a
Typen/aOLEDOLEDMIPMicroLED

Functions

Audio Speaker22
Clock
Phonen/a
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMn/a5 ATM5 ATMwater resistant but not waterproof

Notifications

Phonen/a
Emailsn/an/a
Textsn/a

Software

Operating Systemn/an/aProprietaryWatchOS 8
Appsn/a
Musicn/a

All Wearables