Casio G-Shock GBA800 vs. Fitbit Flex vs. Diesel On Full Guard 2.5 vs. Amazfit T-Rex vs. Apple Watch 8

 
G-Shock GBA800
Flex
On Full Guard 2.5
T-Rex
Watch 8
 CasioG-Shock GBA800Remove Buy NowFitbitFlexRemove Buy NowDieselOn Full Guard 2.5Remove Buy NowAmazfitT-RexRemove Buy NowAppleWatch 8Remove Buy Now

Basic Info

Suggested Price$120$100$325$140$499
Release20182013201820192022

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 years5 days4 days20 days18 hrs
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
ResolutionNA454x454360 x 360340 x 272 or 390 x 312
SizeNA1.39 inches1.3 inches1.5 inches or 1.65 inches
TouchNA
TypeLEDAMOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance20 ATM1 ATM3 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemNAWear OSBuild-inWatchOS 9
Apps
Music

All Wearables