Polar M400 vs. Polar M600 vs. Fitbit Alta vs. Misfit Flash Link vs. Apple Series 6

 
M400
M600
Alta
Flash Link
Series 6
 PolarM400Remove Buy NowPolarM600Remove Buy NowFitbitAltaRemove Buy NowMisfitFlash LinkRemove Buy NowAppleSeries 6Remove Buy Now

Basic Info

Suggested Price$200$330$130$20$399
Release20142016201620152020

Activity & Fitness

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

Battery

Duration8 hours to 30 days2 days5 days6 monthsNot yet
Rechargeable

Compatibility

Android
iOS
Windows Phonen/an/an/a
Macn/a
Windowsn/a

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a240 x 240n/an/a384 x 480
Sizen/a1.3 inchesn/an/a40mm
Touchn/an/an/a
Typen/aTFTOLEDn/aMicroLED

Functions

Audio SpeakerAlerts onlyAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor5 ATM
Water Resistance3 ATMIPX8n/a3 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating Systemn/aAndroid Wearn/an/aWatchOS 5
Apps
Music

All Wearables