Polar M600 vs. Casio WSD-F20A vs. Diesel On Full Guard vs. Fitbit Flex vs. Diesel On Full Guard 2.5

 
M600
WSD-F20A
On Full Guard
Flex
On Full Guard 2.5
 PolarM600Remove Buy NowCasioWSD-F20ARemove Buy NowDieselOn Full GuardRemove Buy NowFitbitFlexRemove Buy NowDieselOn Full Guard 2.5Remove Buy Now

Basic Info

Suggested Price$330$399$325$100$325
Release20162018201720132018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 days1 day1 day5 days4 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution240 x 240320 x 320454 x 454NA454x454
Size1.3 inches1.32 inches1.4 inchesNA1.39 inches
Touchn/aNA
TypeTFTLCDOMOLEDLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX85 ATMIP671 ATM3 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid WearWear OSAndroid Wear 2.0NAWear OS
Apps
Music

All Wearables