Polar M400 vs. Skagen Falster vs. Fitbit Flex vs. Diesel On Full Guard 2.5 vs. Fossil Gen 5 Smartwatch Carlyle

 
M400
Falster
Flex
On Full Guard 2.5
Gen 5 Smartwatch Carlyle
 PolarM400Remove Buy NowSkagenFalsterRemove Buy NowFitbitFlexRemove Buy NowDieselOn Full Guard 2.5Remove Buy NowFossilGen 5 Smartwatch CarlyleRemove Buy Now

Basic Info

Suggested Price$200$275$100$325$295
Release20142018201320182019

Activity & Fitness

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

Battery

Duration8 hours to 30 days24 hours5 days4 days1 day
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/aNA454x454328 x 328
Sizen/aNA1.39 inches1.3 inches
TouchNA
Typen/aOLEDLEDAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance3 ATM1 ATM1 ATM3 ATM3 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aNANAWear OSWear OS
Apps
Music

All Wearables