Garmin Forerunner 735XT vs. Casio WSD-F20A vs. Garmin 645 Music vs. Garmin VivoActive 4 vs. Apple Series 6

 
Forerunner 735XT
WSD-F20A
645 Music
VivoActive 4
Series 6
 GarminForerunner 735XTRemove Buy NowCasioWSD-F20ARemove Buy NowGarmin645 MusicRemove Buy NowGarminVivoActive 4Remove Buy NowAppleSeries 6Remove Buy Now

Basic Info

Suggested Price$450$399$450$349$399
Release20162018201820192020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration14 hours to 11 days1 day7 days8 daysNot yet
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Macn/a
Windowsn/a

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution215 x 180320 x 320240 x 240260 x 260384 x 480
Size1.23 inches1.32 inches1.2 inches1.3ionches40mm
Touchn/a
Typen/aLCDMIPMIPMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor5 ATM
Water Resistance5 ATM5 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aWear OSWear OSWatchOS 5
Apps
Music

All Wearables