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

 
Watch
WSD-F20A
On Full Guard
On Full Guard 2.5
T-Rex
 AppleWatchRemove Buy NowCasioWSD-F20ARemove Buy NowDieselOn Full GuardRemove Buy NowDieselOn Full Guard 2.5Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$349$399$325$325$140
Release20152018201720182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration18 hours1 day1 day4 days20 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution340 x 272 or 390 x 312320 x 320454 x 454454x454360 x 360
Size1.5 inches or 1.65 inches1.32 inches1.4 inches1.39 inches1.3 inches
Touch
TypeAMOLEDLCDOMOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX75 ATMIP673 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemWatch OSWear OSAndroid Wear 2.0Wear OSBuild-in
Apps
Music

All Wearables