TomTom Spark vs. Amazfit Stratos vs. Michael Kors Grayson vs. Fitbit Charge 3 vs. Michael Kors Grayson vs. Garmin Vivosmart 4

 
Spark
Stratos
Grayson
Charge 3
Grayson
Vivosmart 4
 TomTomSparkRemove Buy NowAmazfitStratosRemove Buy NowMichael KorsGraysonRemove Buy NowFitbitCharge 3Remove Buy NowMichael KorsGraysonRemove Buy NowGarminVivosmart 4Remove Buy Now

Basic Info

Suggested Price$150$199$350$150$350$130
Release201520182018201820182018

Activity & Fitness

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

Battery

Durationn/a5 days24 hours7 days24 hours7 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
WindowsNot yet

Connectivity

Bluetooth
Cellular
GPS
NFCNA
Wi-Fi

Display

Colorn/a
Resolutionn/a320 x 300453 x 45466 x 18453x45448 x 128
Sizen/a1.34 inches1.39 inches.721 inches1.39 inches0.74 inches
Touch
TypeLCDOLEDAMOLEDOLEDAMOLEDOLED

Functions

Audio SpeakerBluetooth
Clock
Phonen/a
Vibration
Voice

Hardware

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

Notifications

Phonen/a
Emailsn/a
Textsn/a

Software

Operating Systemn/aProprietaryAndroid WearNAAndroid Wear
Apps
Music

All Wearables