Garmin Forerunner 225 vs. Polar V800 vs. Amazfit Stratos vs. Garmin 645 Music vs. Fitbit Flex

 
Forerunner 225
V800
Stratos
645 Music
Flex
 GarminForerunner 225Remove Buy NowPolarV800Remove Buy NowAmazfitStratosRemove Buy NowGarmin645 MusicRemove Buy NowFitbitFlexRemove Buy Now

Basic Info

Suggested Price$300$470$199$450$100
Release20152014201820182013

Activity & Fitness

Calories
Cycling (Bicycling)n/a
Distance
Heartn/a
Oxygen
Sleep
Steps
Swim

Battery

Duration10 hours to 4 weeks13 hours to 30 days5 days7 days5 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution180 x 180n/a320 x 300240 x 240NA
Size1 inchn/a1.34 inches1.2 inchesNA
TouchNA
Typen/an/aOLEDMIPLED

Functions

Audio Speaker22Alerts only
Clock
Phonen/a
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM3 ATM5 ATM5 ATM1 ATM

Notifications

Phonen/a
Emailsn/a
Textsn/a

Software

Operating Systemn/an/aProprietaryNA
Appsn/a
Musicn/a

All Wearables