Samsung Gear S vs. Polar Loop 2 vs. Garmin 645 Music vs. Samsung Galaxy Watch vs. Garmin Vivosmart 4

 
Gear S
Loop 2
645 Music
Galaxy Watch
Vivosmart 4
 SamsungGear SRemove Buy NowPolarLoop 2Remove Buy NowGarmin645 MusicRemove Buy NowSamsungGalaxy WatchRemove Buy NowGarminVivosmart 4Remove Buy Now

Basic Info

Suggested Price$250$120$450$330$130
Release20132015201820182018

Activity & Fitness

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

Battery

Durationn/a8 days (without notifications)7 days7 days7 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
CellularNA
GPS
NFC
Wi-Fi

Display

Color
Resolution480 x 360n/a240 x 240360 x 36048 x 128
Size2 inchesn/a1.2 inches1.2 inches or 1.3 inches0.74 inches
Touch
TypeSuper AMOLEDLEDMIPAMOLEDOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP672 ATM5 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemTizenn/aTizen OS
Apps
MusicSpotify

All Wearables