Fitbit Alta vs. Garmin 645 Music vs. Garmin Forerunner 235 vs. Michael Kors Grayson vs. Garmin Forerunner 45 vs. Michael Kors Grayson

 
Alta
645 Music
Forerunner 235
Grayson
Forerunner 45
Grayson
 FitbitAltaRemove Buy NowGarmin645 MusicRemove Buy NowGarminForerunner 235Remove Buy NowMichael KorsGraysonRemove Buy NowGarminForerunner 45Remove Buy NowMichael KorsGraysonRemove Buy Now

Basic Info

Suggested Price$130$450$299.99$350$199$350
Release201620182017201820192018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days7 days9 days24 hours7 days24 hours
Rechargeable

Compatibility

Android
iOS
Windows Phone
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a240 x 240215 x 180453 x 454208 x 208453x454
Sizen/a1.2 inches1.23 inches1.39 inches1.04 inches1.39 inches
Touchn/a
TypeOLEDMIPMIPAMOLEDLCDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistancen/a5 ATM5 ATM1 ATM5 ATM1 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating Systemn/aAndroid WearBuilt-inAndroid Wear
Apps
Music

All Wearables