Polar M400 vs. Sony SmartBand 2 vs. Samsung Galaxy Watch vs. Polar Loop vs. Xiaomi Mi Band 4

 
M400
SmartBand 2
Galaxy Watch
Loop
Mi Band 4
 PolarM400Remove Buy NowSonySmartBand 2Remove Buy NowSamsungGalaxy WatchRemove Buy NowPolarLoopRemove Buy NowXiaomiMi Band 4Remove Buy Now

Basic Info

Suggested Price$200$130$330$100$25
Release20142015201820132019

Activity & Fitness

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

Battery

Duration8 hours to 30 days2 days7 days5 days20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
CellularNA
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/an/a360 x 360NA120x240
Sizen/an/a1.2 inches or 1.3 inchesNA0.95 inches
Touchn/a
Typen/an/aAMOLEDLEDAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance3 ATMIP585 ATM2 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/aTizen OSNAAMAZFIT OS
Apps
MusicSpotify

All Wearables