Polar M400 vs. TomTom Adventurer vs. Michael Kors Grayson vs. Michael Kors Grayson vs. Apple Watch Ultra vs. Fitbit Inspire 3

 
M400
Adventurer
Grayson
Grayson
Watch Ultra
Inspire 3
 PolarM400Remove Buy NowTomTomAdventurerRemove Buy NowMichael KorsGraysonRemove Buy NowMichael KorsGraysonRemove Buy NowAppleWatch UltraRemove Buy NowFitbitInspire 3Remove Buy Now

Basic Info

Suggested Price$200$350$350$350$799$100
Release201420162018201820222022

Activity & Fitness

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

Battery

Duration8 hours to 30 daysn/a24 hours24 hours36 hrs10 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/an/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/an/a453 x 454453x454502x410 pixels32x18
Sizen/an/a1.39 inches1.39 inches1.92 inches46 inches
Touch
Typen/an/aAMOLEDAMOLEDAMOLED

Functions

Audio SpeakerAlerts onlyBluetooth
ClockLTPO OLED Retina
Phonen/a
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance3 ATM5 ATM1 ATM1 ATM10 ATM (100 Meters)5 ATM

Notifications

Phonen/a
Emailsn/a
Textsn/a

Software

Operating Systemn/an/aAndroid WearAndroid WearWatchOS 9
Apps
Music

All Wearables