Fitbit Flex 2 vs. Fitbit Zip vs. Garmin 645 Music vs. Garmin Vivofit 4 vs. Michael Kors Access Sofie HR

 
Flex 2
Zip
645 Music
Vivofit 4
Access Sofie HR
 FitbitFlex 2Remove Buy NowFitbitZipRemove Buy NowGarmin645 MusicRemove Buy NowGarminVivofit 4Remove Buy NowMichael KorsAccess Sofie HRRemove Buy Now

Basic Info

Suggested Price$100$60$450$79.95$395
Release20162012201820182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days6 months7 days1 year2 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/an/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/an/a240 x 24088 x 88390 x 390
Sizen/an/a1.2 inchesNA1.19 inches
Touchn/a
TypeLEDn/aMIPNAOMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMSplash Resistant5 ATM5 ATM0.3 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/aWear OS
Apps
Music

All Wearables