Apple Watch Series 3 vs. Fitbit Flex 2 vs. Amazfit Stratos vs. Michael Kors Access Sofie HR vs. Garmin Vivosmart 4

 
Watch Series 3
Flex 2
Stratos
Access Sofie HR
Vivosmart 4
 AppleWatch Series 3Remove Buy NowFitbitFlex 2Remove Buy NowAmazfitStratosRemove Buy NowMichael KorsAccess Sofie HRRemove Buy NowGarminVivosmart 4Remove Buy Now

Basic Info

Suggested Price$329$100$199$395$130
Release20172016201820192018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration18 hours5 days5 days2 days7 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolution340 x 272 or 390 x 312n/a320 x 300390 x 39048 x 128
Size1.5 inches or 1.65 inchesn/a1.34 inches1.19 inches0.74 inches
Touchn/a
TypeAMOLEDLEDOLEDOMOLEDOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

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

Notifications

Phone
Emails
Texts

Software

Operating SystemWatchOS 4n/aProprietaryWear OS
Apps
Music

All Wearables