Garmin Forerunner 225 vs. Fitbit One vs. Casio WSD-F20A vs. Garmin 645 Music vs. Apple Series 6

 
Forerunner 225
One
WSD-F20A
645 Music
Series 6
 GarminForerunner 225Remove Buy NowFitbitOneRemove Buy NowCasioWSD-F20ARemove Buy NowGarmin645 MusicRemove Buy NowAppleSeries 6Remove Buy Now

Basic Info

Suggested Price$300$100$399$450$399
Release20152012201820182020

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration10 hours to 4 weeks10-14 days1 day7 daysNot yet
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution180 x 180n/a320 x 320240 x 240384 x 480
Size1 inchn/a1.32 inches1.2 inches40mm
Touch
Typen/aOLEDLCDMIPMicroLED

Functions

Audio Speaker22
Clock
Phonen/a
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor5 ATM
Water Resistance5 ATMSplast Resistant5 ATM5 ATM

Notifications

Phonen/a
Emailsn/a
Textsn/a

Software

Operating Systemn/an/aWear OSWatchOS 5
Appsn/a
Musicn/a

All Wearables