Fitbit Flex 2 vs. Garmin 645 Music vs. Garmin Forerunner 235 vs. Pebble Core vs. Amazfit GTS

 
Flex 2
645 Music
Forerunner 235
Core
GTS
 FitbitFlex 2Remove Buy NowGarmin645 MusicRemove Buy NowGarminForerunner 235Remove Buy NowPebbleCoreRemove Buy NowAmazfitGTSRemove Buy Now

Basic Info

Suggested Price$100$450$299.99$99$150
Release20162018201720162019

Activity & Fitness

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

Battery

Duration5 days7 days9 daysNA14 days
Rechargeable

Compatibility

Android
iOSNA
Windows Phonen/aNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a240 x 240215 x 180NA348 x 442
Sizen/a1.2 inches1.23 inchesNA1.65 inches
Touchn/aNA
TypeLEDMIPMIPNAAMOLED

Functions

Audio Speaker
Clock
PhoneNA
VibrationNA
Voice

Hardware

AccelerometerNA
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATM5 ATMNA5 ATM

Notifications

PhoneNA
EmailsNA
TextsNA

Software

Operating Systemn/aNAWear OS
Apps
Music

All Wearables