Casio WSD-F20A vs. Garmin Forerunner 235 vs. Jawbone UP2 vs. Polar A370 vs. Amazfit T-Rex

 
WSD-F20A
Forerunner 235
UP2
A370
T-Rex
 CasioWSD-F20ARemove Buy NowGarminForerunner 235Remove Buy NowJawboneUP2Remove Buy NowPolarA370Remove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$399$299.99$100$179.95$140
Release20182017201520172019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration1 day9 days7 daysUp to 3 days20 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution320 x 320215 x 180NA160 x 80360 x 360
Size1.32 inches1.23 inchesNA1.18 inches1.3 inches
TouchNA
TypeLCDMIPNATFT LCDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATMSplash resistantWR305 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemWear OSNABuild-in
Apps
Music

All Wearables