Casio WSD-F20A vs. Fitbit Flex vs. Garmin Vivosmart 4 vs. Amazfit T-Rex vs. Apple SE (2022)

 
WSD-F20A
Flex
Vivosmart 4
T-Rex
SE (2022)
 CasioWSD-F20ARemove Buy NowFitbitFlexRemove Buy NowGarminVivosmart 4Remove Buy NowAmazfitT-RexRemove Buy NowAppleSE (2022)Remove Buy Now

Basic Info

Suggested Price$399$100$130$140$249
Release20182013201820192022

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration1 day5 days7 days20 daysNot yet
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color368 x 448 pixels
Resolution320 x 320NA48 x 128360 x 36040mm
Size1.32 inchesNA0.74 inches1.3 inches
TouchNALTPO OLED Retina
TypeLCDLEDOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter5 ATM
Ultraviolet Sensor
Water Resistance5 ATM1 ATM5 ATM5 ATM

Notifications

Phone
EmailsWatchOS 8.1
Texts

Software

Operating SystemWear OSNABuild-in
Apps
Music

All Wearables