Polar M400 vs. Apple Watch Series 2 vs. Michael Kors Grayson vs. MobVoi TicWatch Pro vs. Fitbit Flex vs. Michael Kors Grayson

 
M400
Watch Series 2
Grayson
TicWatch Pro
Flex
Grayson
 PolarM400Remove Buy NowAppleWatch Series 2Remove Buy NowMichael KorsGraysonRemove Buy NowMobVoiTicWatch ProRemove Buy NowFitbitFlexRemove Buy NowMichael KorsGraysonRemove Buy Now

Basic Info

Suggested Price$200$269$350$300$100$350
Release201420162018201820132018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heartn/a
Oxygen
Sleep
Steps
Swim

Battery

Duration8 hours to 30 days18 hours24 hours30 days5 days24 hours
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a340 x 272 or 390 x 312453 x 454400 x 400NA453x454
Sizen/a1.5 inches or 1.65 inches1.39 inches1.4 inchesNA1.39 inches
TouchNA
Typen/aAMOLEDAMOLEDOLED/FSTNLEDAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance3 ATM5ATM1 ATMIP681 ATM1 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aWatch OSAndroid WearWear OSNAAndroid Wear
Apps
Music

All Wearables