Garmin Forerunner 225 vs. Fitbit Ionic vs. Garmin 645 Music vs. Polar A370 vs. Garmin Instinct

 
Forerunner 225
Ionic
645 Music
A370
Instinct
 GarminForerunner 225Remove Buy NowFitbitIonicRemove Buy NowGarmin645 MusicRemove Buy NowPolarA370Remove Buy NowGarminInstinctRemove Buy Now

Basic Info

Suggested Price$300$299$450$179.95$300
Release20152017201820172018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration10 hours to 4 weeks4+ days7 daysUp to 3 days14 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution180 x 180348x250240 x 240160 x 80128 x 128
Size1 inch1.421.2 inches1.18 inches0.9 inches
Touch
Typen/aOLEDMIPTFT LCDOMOLED

Functions

Audio Speaker22
Clock
Phonen/a
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM50m5 ATMWR3010 ATM

Notifications

Phonen/a
Emailsn/a
Textsn/a

Software

Operating Systemn/aFitbit OS
Appsn/a
Musicn/a

All Wearables