Sony SmartWatch 3 vs. Fitbit Charge 2 vs. Garmin 645 Music vs. Fitbit Flex vs. Polar A370

 
SmartWatch 3
Charge 2
645 Music
Flex
A370
 SonySmartWatch 3Remove Buy NowFitbitCharge 2Remove Buy NowGarmin645 MusicRemove Buy NowFitbitFlexRemove Buy NowPolarA370Remove Buy Now

Basic Info

Suggested Price$250$150$450$100$179.95
Release20142016201820132017

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 days5 days7 days5 daysUp to 3 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution320 x 320n/a240 x 240NA160 x 80
Size1.6 inchesn/a1.2 inchesNA1.18 inches
Touchn/aNA
TypeTFT LCDOLEDMIPLEDTFT LCD

Functions

Audio SpeakerBluetooth
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP68n/a5 ATM1 ATMWR30

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid Wearn/aNA
Apps
Music

All Wearables