Fitbit Alta vs. Fitbit Charge 2 vs. Casio WSD-F20A vs. Apple Watch 7 vs. Apple Watch 8

 
Alta
Charge 2
WSD-F20A
Watch 7
Watch 8
 FitbitAltaRemove Buy NowFitbitCharge 2Remove Buy NowCasioWSD-F20ARemove Buy NowAppleWatch 7Remove Buy NowAppleWatch 8Remove Buy Now

Basic Info

Suggested Price$130$150$399$429$499
Release20162016201820212022

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days5 days1 day18 Hours18 hrs
Rechargeable

Compatibility

Android
iOS
Windows Phone
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/an/a320 x 320396 x 484340 x 272 or 390 x 312
Sizen/an/a1.32 inches1.9 inches1.5 inches or 1.65 inches
Touchn/an/a
TypeOLEDOLEDLCDMicroLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistancen/an/a5 ATMwater resistant but not waterproof5 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating Systemn/an/aWear OSWatchOS 8WatchOS 9
Apps
Music

All Wearables