Apple Watch Series 2 vs. Apple Watch vs. Casio WSD-F20A vs. Fitbit Alta HR vs. Amazfit GTR

 
Watch Series 2
Watch
WSD-F20A
Alta HR
GTR
 AppleWatch Series 2Remove Buy NowAppleWatchRemove Buy NowCasioWSD-F20ARemove Buy NowFitbitAlta HRRemove Buy NowAmazfitGTRRemove Buy Now

Basic Info

Suggested Price$269$349$399$150$199
Release20162015201820172019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration18 hours18 hours1 day7 days24 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution340 x 272 or 390 x 312340 x 272 or 390 x 312320 x 320128 x 36454 x 454
Size1.5 inches or 1.65 inches1.5 inches or 1.65 inches1.32 inches1.4 inches1.39 inches
Touch
TypeAMOLEDAMOLEDLCDOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5ATMIPX75 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemWatch OSWatch OSWear OSBuild-in
Apps
Music

All Wearables