Garmin Forerunner 225 vs. Garmin 645 Music vs. Garmin Forerunner 235 vs. Fitbit Charge 3 vs. Amazfit GTS

 
Forerunner 225
645 Music
Forerunner 235
Charge 3
GTS
 GarminForerunner 225Remove Buy NowGarmin645 MusicRemove Buy NowGarminForerunner 235Remove Buy NowFitbitCharge 3Remove Buy NowAmazfitGTSRemove Buy Now

Basic Info

Suggested Price$300$450$299.99$150$150
Release20152018201720182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration10 hours to 4 weeks7 days9 days7 days14 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFCNA
Wi-Fi

Display

Color
Resolution180 x 180240 x 240215 x 18066 x 18348 x 442
Size1 inch1.2 inches1.23 inches.721 inches1.65 inches
Touch
Typen/aMIPMIPOLEDAMOLED

Functions

Audio Speaker22
Clock
Phonen/a
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATM5 ATM5 ATM5 ATM

Notifications

Phonen/a
Emailsn/a
Textsn/a

Software

Operating Systemn/aNAWear OS
Appsn/a
Musicn/a

All Wearables