Fitbit One vs. Casio WSD-F20A vs. Fitbit Alta HR vs. Fitbit Flex vs. Apple Watch Series 4

 
One
WSD-F20A
Alta HR
Flex
Watch Series 4
 FitbitOneRemove Buy NowCasioWSD-F20ARemove Buy NowFitbitAlta HRRemove Buy NowFitbitFlexRemove Buy NowAppleWatch Series 4Remove Buy Now

Basic Info

Suggested Price$100$399$150$100$329
Release20122018201720132018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration10-14 days1 day7 days5 daysNot Yet
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a320 x 320128 x 36NA384 x 480
Sizen/a1.32 inches1.4 inchesNA1.78 inches
TouchNA
TypeOLEDLCDOLEDLEDMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceSplast Resistant5 ATM1 ATMNot Yet

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aWear OSNAWatch OS 5
Apps
Music

All Wearables