Polar M400 vs. Fitbit One vs. Misfit Ray vs. Xiaomi Mi Band 2 vs. Apple Watch Series 2

 
M400
One
Ray
Mi Band 2
Watch Series 2
 PolarM400Remove Buy NowFitbitOneRemove Buy NowMisfitRayRemove Buy NowXiaomiMi Band 2Remove Buy NowAppleWatch Series 2Remove Buy Now

Basic Info

Suggested Price$200$100$100$23$269
Release20142012201620162016

Activity & Fitness

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

Battery

Duration8 hours to 30 days10-14 days6 months20 hours18 hours
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/an/an/an/a340 x 272 or 390 x 312
Sizen/an/an/a0.42 inches1.5 inches or 1.65 inches
Touchn/a
Typen/aOLEDLEDOLEDAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance3 ATMSplast Resistant5 ATMIP675ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/an/an/aWatch OS
Apps
Music

All Wearables