Fitbit Flex 2 vs. Michael Kors Grayson vs. Garmin Vivosmart 3 vs. Polar A370 vs. Apple Watch Series 4 vs. Michael Kors Grayson

 
Flex 2
Grayson
Vivosmart 3
A370
Watch Series 4
Grayson
 FitbitFlex 2Remove Buy NowMichael KorsGraysonRemove Buy NowGarminVivosmart 3Remove Buy NowPolarA370Remove Buy NowAppleWatch Series 4Remove Buy NowMichael KorsGraysonRemove Buy Now

Basic Info

Suggested Price$100$350$139.99$179.95$329$350
Release201620182017201720182018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days24 hours5 daysUp to 3 daysNot Yet24 hours
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a453 x 45464 x 128160 x 80384 x 480453x454
Sizen/a1.39 inchesNA1.18 inches1.78 inches1.39 inches
Touchn/a
TypeLEDAMOLEDOLEDTFT LCDMicroLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM1 ATM5 ATMWR30Not Yet1 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aAndroid WearWatch OS 5Android Wear
Apps
Music

All Wearables