Garmin Forerunner 935 vs. Garmin 645 Music vs. Fitbit Charge 3 vs. Amazfit GTS vs. Apple Series 6

 
Forerunner 935
645 Music
Charge 3
GTS
Series 6
 GarminForerunner 935Remove Buy NowGarmin645 MusicRemove Buy NowFitbitCharge 3Remove Buy NowAmazfitGTSRemove Buy NowAppleSeries 6Remove Buy Now

Basic Info

Suggested Price$500$450$150$150$399
Release20172018201820192020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

DurationUp to 2 weeks7 days7 days14 daysNot yet
Rechargeable

Compatibility

Android
iOS
Windows Phone
Mac
WindowsNot yet

Connectivity

Bluetooth
Cellular
GPS
NFCNA
Wi-Fi

Display

Color
Resolution240 x 240240 x 24066 x 18348 x 442384 x 480
Size1.2 inches1.2 inches.721 inches1.65 inches40mm
Touch
TypeLCDMIPOLEDAMOLEDMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor5 ATM
Water Resistance5 ATM5 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemNAWear OSWatchOS 5
Apps
Music

All Wearables