Fitbit Flex 2 vs. Amazfit Bip vs. Garmin 645 Music vs. Apple Watch Series 4 vs. Michael Kors Access Sofie HR

 
Flex 2
Bip
645 Music
Watch Series 4
Access Sofie HR
 FitbitFlex 2Remove Buy NowAmazfitBipRemove Buy NowGarmin645 MusicRemove Buy NowAppleWatch Series 4Remove Buy NowMichael KorsAccess Sofie HRRemove Buy Now

Basic Info

Suggested Price$100$99.99$450$329$395
Release20162018201820182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days30 days7 daysNot Yet2 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a176 x 176240 x 240384 x 480390 x 390
Sizen/a1.28 inches1.2 inches1.78 inches1.19 inches
Touchn/a
TypeLEDNAMIPMicroLEDOMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMIP685 ATMNot Yet0.3 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aWatch OS 5Wear OS
Apps
Music

All Wearables