Amazfit Stratos vs. Apple Watch vs. Casio WSD-F20A vs. Fitbit Alta HR vs. Amazfit T-Rex

 
Stratos
Watch
WSD-F20A
Alta HR
T-Rex
 AmazfitStratosRemove Buy NowAppleWatchRemove Buy NowCasioWSD-F20ARemove Buy NowFitbitAlta HRRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$199$349$399$150$140
Release20182015201820172019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration5 days18 hours1 day7 days20 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution320 x 300340 x 272 or 390 x 312320 x 320128 x 36360 x 360
Size1.34 inches1.5 inches or 1.65 inches1.32 inches1.4 inches1.3 inches
Touch
TypeOLEDAMOLEDLCDOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMIPX75 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemProprietaryWatch OSWear OSBuild-in
Apps
Music

All Wearables