Fitbit Flex 2 vs. Sony SmartBand 2 vs. Garmin 645 Music vs. Pebble Core vs. Amazfit GTR

 
Flex 2
SmartBand 2
645 Music
Core
GTR
 FitbitFlex 2Remove Buy NowSonySmartBand 2Remove Buy NowGarmin645 MusicRemove Buy NowPebbleCoreRemove Buy NowAmazfitGTRRemove Buy Now

Basic Info

Suggested Price$100$130$450$99$199
Release20162015201820162019

Activity & Fitness

Calories
Cycling (Bicycling)NA
Distance
Heart
Oxygen
SleepNA
Steps
Swim

Battery

Duration5 days2 days7 daysNA24 days
Rechargeable

Compatibility

Android
iOSNA
Windows Phonen/an/aNA
Macn/aNA
Windowsn/aNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/an/a
Resolutionn/an/a240 x 240NA454 x 454
Sizen/an/a1.2 inchesNA1.39 inches
Touchn/an/aNA
TypeLEDn/aMIPNAAMOLED

Functions

Audio Speaker
Clock
PhoneNA
VibrationNA
Voice

Hardware

AccelerometerNA
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMIP585 ATMNA5 ATM

Notifications

PhoneNA
EmailsNA
TextsNA

Software

Operating Systemn/an/aNABuild-in
Apps
Music

All Wearables