Fitbit Flex 2 vs. Casio WSD-F20A vs. Diesel On Full Guard vs. Fitbit Charge 3 vs. Fitbit Charge HR

 
Flex 2
WSD-F20A
On Full Guard
Charge 3
Charge HR
 FitbitFlex 2Remove Buy NowCasioWSD-F20ARemove Buy NowDieselOn Full GuardRemove Buy NowFitbitCharge 3Remove Buy NowFitbitCharge HRRemove Buy Now

Basic Info

Suggested Price$100$399$325$150$150
Release20162018201720182015

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days1 day1 day7 days5 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Mac
WindowsNot yet

Connectivity

Bluetooth
Cellular
GPS
NFCNA
Wi-Fi

Display

Colorn/a
Resolutionn/a320 x 320454 x 45466 x 18NA
Sizen/a1.32 inches1.4 inches.721 inchesNA
Touchn/aNA
TypeLEDLCDOMOLEDOLEDOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATMIP675 ATM1 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aWear OSAndroid Wear 2.0NANA
Apps
Music

All Wearables