Fitbit Flex 2 vs. Casio WSD-F20A vs. Diesel On Full Guard vs. Fitbit Alta HR vs. Apple Series 6

 
Flex 2
WSD-F20A
On Full Guard
Alta HR
Series 6
 FitbitFlex 2Remove Buy NowCasioWSD-F20ARemove Buy NowDieselOn Full GuardRemove Buy NowFitbitAlta HRRemove Buy NowAppleSeries 6Remove Buy Now

Basic Info

Suggested Price$100$399$325$150$399
Release20162018201720172020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days1 day1 day7 daysNot yet
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a320 x 320454 x 454128 x 36384 x 480
Sizen/a1.32 inches1.4 inches1.4 inches40mm
Touchn/a
TypeLEDLCDOMOLEDOLEDMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor5 ATM
Water Resistance5 ATM5 ATMIP67

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aWear OSAndroid Wear 2.0WatchOS 5
Apps
Music

All Wearables