Polar M400 vs. Michael Kors Grayson vs. Fitbit Alta HR vs. Michael Kors Grayson vs. Garmin Venu vs. Apple Series 6

 
M400
Grayson
Alta HR
Grayson
Venu
Series 6
 PolarM400Remove Buy NowMichael KorsGraysonRemove Buy NowFitbitAlta HRRemove Buy NowMichael KorsGraysonRemove Buy NowGarminVenuRemove Buy NowAppleSeries 6Remove Buy Now

Basic Info

Suggested Price$200$350$150$350$299$399
Release201420182017201820192020

Activity & Fitness

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

Battery

Duration8 hours to 30 days24 hours7 days24 hours5 daysNot yet
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a453 x 454128 x 36453x454390 x 390384 x 480
Sizen/a1.39 inches1.4 inches1.39 inches1.2 inches40mm
Touch
Typen/aAMOLEDOLEDAMOLEDAMOLEDMicroLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor5 ATM
Water Resistance3 ATM1 ATM1 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aAndroid WearAndroid WearWear OS WatchOS 5
Apps
Music

All Wearables