Polar Loop 2 vs. Fitbit Ionic vs. Pebble Core vs. Michael Kors Access Sofie HR vs. Amazfit GTR

 
Loop 2
Ionic
Core
Access Sofie HR
GTR
 PolarLoop 2Remove Buy NowFitbitIonicRemove Buy NowPebbleCoreRemove Buy NowMichael KorsAccess Sofie HRRemove Buy NowAmazfitGTRRemove Buy Now

Basic Info

Suggested Price$120$299$99$395$199
Release20152017201620192019

Activity & Fitness

Calories
Cycling (Bicycling)NA
Distance
Heartn/a
Oxygen
SleepNA
Steps
Swim

Battery

Duration8 days (without notifications)4+ daysNA2 days24 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a348x250NA390 x 390454 x 454
Sizen/a1.42NA1.19 inches1.39 inches
TouchNA
TypeLEDOLEDNAOMOLEDAMOLED

Functions

Audio Speaker
Clock
PhoneNA
VibrationNA
Voice

Hardware

AccelerometerNA
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance2 ATM50mNA0.3 ATM5 ATM

Notifications

PhoneNA
EmailsNA
TextsNA

Software

Operating Systemn/aFitbit OSNAWear OSBuild-in
Apps
Music

All Wearables