Fitbit Alta vs. Casio WSD-F20A vs. Fitbit Flex vs. Apple Watch Series 5 vs. Apple Watch 8

 
Alta
WSD-F20A
Flex
Watch Series 5
Watch 8
 FitbitAltaRemove Buy NowCasioWSD-F20ARemove Buy NowFitbitFlexRemove Buy NowAppleWatch Series 5Remove Buy NowAppleWatch 8Remove Buy Now

Basic Info

Suggested Price$130$399$100$329$499
Release20162018201320192022

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days1 day5 daysNot Yet18 hrs
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a320 x 320NA384 x 480340 x 272 or 390 x 312
Sizen/a1.32 inchesNA1.78 Inches1.5 inches or 1.65 inches
Touchn/aNA
TypeOLEDLCDLEDMicroLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistancen/a5 ATM1 ATMNot Yet5 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating Systemn/aWear OSNAWatchOS 5WatchOS 9
Apps
Music

All Wearables