Garmin Forerunner 935 vs. Garmin 645 Music vs. Fitbit Flex vs. Jaybird Reign vs. Michael Kors Access Sofie HR

 
Forerunner 935
645 Music
Flex
Reign
Access Sofie HR
 GarminForerunner 935Remove Buy NowGarmin645 MusicRemove Buy NowFitbitFlexRemove Buy NowJaybirdReignRemove Buy NowMichael KorsAccess Sofie HRRemove Buy Now

Basic Info

Suggested Price$500$450$100$150$395
Release20172018201320152019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

DurationUp to 2 weeks7 days5 days5 days2 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNANA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution240 x 240240 x 240NANA390 x 390
Size1.2 inches1.2 inchesNANA1.19 inches
TouchNANA
TypeLCDMIPLEDLEDOMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATM1 ATMNA0.3 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemNANAWear OS
Apps
Music

All Wearables