Polar M400 vs. Samsung Gear S2 vs. Misfit Ray vs. Xiaomi Mi Band 2 vs. Apple Watch Series 2

 
M400
Gear S2
Ray
Mi Band 2
Watch Series 2
 PolarM400Remove Buy NowSamsungGear S2Remove Buy NowMisfitRayRemove Buy NowXiaomiMi Band 2Remove Buy NowAppleWatch Series 2Remove Buy Now

Basic Info

Suggested Price$200$300$100$23$269
Release20142015201620162016

Activity & Fitness

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

Battery

Duration8 hours to 30 days2-3 days6 months20 hours18 hours
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellularn/a
GPSn/a
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/a360 x 360n/an/a340 x 272 or 390 x 312
Sizen/a1.2 inchesn/a0.42 inches1.5 inches or 1.65 inches
Touchn/a
Typen/aSuper AMOLEDLEDOLEDAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance3 ATMIP685 ATMIP675ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aTizenn/an/aWatch OS
Apps
Music

All Wearables