Polar Loop 2 vs. Garmin Forerunner 935 vs. Garmin 645 Music vs. Fitbit Alta HR vs. Jaybird Reign

 
Loop 2
Forerunner 935
645 Music
Alta HR
Reign
 PolarLoop 2Remove Buy NowGarminForerunner 935Remove Buy NowGarmin645 MusicRemove Buy NowFitbitAlta HRRemove Buy NowJaybirdReignRemove Buy Now

Basic Info

Suggested Price$120$500$450$150$150
Release20152017201820172015

Activity & Fitness

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

Battery

Duration8 days (without notifications)Up to 2 weeks7 days7 days5 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a240 x 240240 x 240128 x 36NA
Sizen/a1.2 inches1.2 inches1.4 inchesNA
TouchNA
TypeLEDLCDMIPOLEDLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance2 ATM5 ATM5 ATMNA

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aNA
Apps
Music

All Wearables