Polar M600 vs. Fitbit Flex 2 vs. Diesel On Full Guard vs. Garmin Vivofit 4 vs. Jaybird Reign

 
M600
Flex 2
On Full Guard
Vivofit 4
Reign
 PolarM600Remove Buy NowFitbitFlex 2Remove Buy NowDieselOn Full GuardRemove Buy NowGarminVivofit 4Remove Buy NowJaybirdReignRemove Buy Now

Basic Info

Suggested Price$330$100$325$79.95$150
Release20162016201720182015

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 days5 days1 day1 year5 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/an/aNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolution240 x 240n/a454 x 45488 x 88NA
Size1.3 inchesn/a1.4 inchesNANA
Touchn/an/aNA
TypeTFTLEDOMOLEDNALED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX85 ATMIP675 ATMNA

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid Wearn/aAndroid Wear 2.0NA
Apps
Music

All Wearables