Garmin Forerunner 225 vs. Samsung Gear S2 vs. Fitbit Ionic vs. Casio G-Shock GBA800 vs. Garmin 645 Music

 
Forerunner 225
Gear S2
Ionic
G-Shock GBA800
645 Music
 GarminForerunner 225Remove Buy NowSamsungGear S2Remove Buy NowFitbitIonicRemove Buy NowCasioG-Shock GBA800Remove Buy NowGarmin645 MusicRemove Buy Now

Basic Info

Suggested Price$300$300$299$120$450
Release20152015201720182018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration10 hours to 4 weeks2-3 days4+ days2 years7 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellularn/a
GPSn/a
NFC
Wi-Fi

Display

Color
Resolution180 x 180360 x 360348x250240 x 240
Size1 inch1.2 inches1.421.2 inches
Touch
Typen/aSuper AMOLEDOLEDMIP

Functions

Audio Speaker22
Clock
Phonen/a
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMIP6850m20 ATM5 ATM

Notifications

Phonen/a
Emailsn/a
Textsn/a

Software

Operating Systemn/aTizenFitbit OS
Appsn/a
Musicn/a

All Wearables