Polar M400 vs. Samsung Gear S2 vs. Polar Loop 2 vs. Michael Kors Access Sofie HR vs. Apple SE

 
M400
Gear S2
Loop 2
Access Sofie HR
SE
 PolarM400Remove Buy NowSamsungGear S2Remove Buy NowPolarLoop 2Remove Buy NowMichael KorsAccess Sofie HRRemove Buy NowAppleSERemove Buy Now

Basic Info

Suggested Price$200$300$120$395$279
Release20142015201520192020

Activity & Fitness

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

Battery

Duration8 hours to 30 days2-3 days8 days (without notifications)2 days18 hours
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellularn/a
GPSn/a
NFC
Wi-Fi

Display

Color
Resolutionn/a360 x 360n/a390 x 390384 x 480
Sizen/a1.2 inchesn/a1.19 inches40mm
Touch
Typen/aSuper AMOLEDLEDOMOLEDMicroLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet SensorNot yet
Water Resistance3 ATMIP682 ATM0.3 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aTizenn/aWear OSWatchOS 5
Apps
Music

All Wearables