Apple Watch Series 3 vs. Casio WSD-F20A vs. Diesel On Full Guard 2.5 vs. Amazfit T-Rex vs. Apple Watch 7

 
Watch Series 3
WSD-F20A
On Full Guard 2.5
T-Rex
Watch 7
 AppleWatch Series 3Remove Buy NowCasioWSD-F20ARemove Buy NowDieselOn Full Guard 2.5Remove Buy NowAmazfitT-RexRemove Buy NowAppleWatch 7Remove Buy Now

Basic Info

Suggested Price$329$399$325$140$429
Release20172018201820192021

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration18 hours1 day4 days20 days18 Hours
Rechargeable

Compatibility

Android
iOS
Windows Phone
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution340 x 272 or 390 x 312320 x 320454x454360 x 360396 x 484
Size1.5 inches or 1.65 inches1.32 inches1.39 inches1.3 inches1.9 inches
Touch
TypeAMOLEDLCDAMOLEDMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATM3 ATM5 ATMwater resistant but not waterproof

Notifications

Phone
Emails
Texts

Software

Operating SystemWatchOS 4Wear OSWear OSBuild-inWatchOS 8
Apps
Music

All Wearables