Polar M600 vs. Fitbit Alta vs. Garmin Forerunner 935 vs. Garmin 645 Music vs. Apple Watch Series 4

 
M600
Alta
Forerunner 935
645 Music
Watch Series 4
 PolarM600Remove Buy NowFitbitAltaRemove Buy NowGarminForerunner 935Remove Buy NowGarmin645 MusicRemove Buy NowAppleWatch Series 4Remove Buy Now

Basic Info

Suggested Price$330$130$500$450$329
Release20162016201720182018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 days5 daysUp to 2 weeks7 daysNot Yet
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution240 x 240n/a240 x 240240 x 240384 x 480
Size1.3 inchesn/a1.2 inches1.2 inches1.78 inches
Touchn/an/a
TypeTFTOLEDLCDMIPMicroLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX8n/a5 ATM5 ATMNot Yet

Notifications

Phone
Emailsn/a
Texts

Software

Operating SystemAndroid Wearn/aWatch OS 5
Apps
Music

All Wearables