Polar M400 vs. Microsoft Band 2 vs. Misfit Ray vs. Amazfit Stratos vs. Xiaomi Mi Band

 
M400
Band 2
Ray
Stratos
Mi Band
 PolarM400Remove Buy NowMicrosoftBand 2Remove Buy NowMisfitRayRemove Buy NowAmazfitStratosRemove Buy NowXiaomiMi BandRemove Buy Now

Basic Info

Suggested Price$200$250$100$199$15
Release20142015201620182015

Activity & Fitness

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

Battery

Duration8 hours to 30 days48 hours (without GPS)6 months5 days30 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/aNA
Resolutionn/a320 x 128n/a320 x 300NA
Sizen/a1.36 inchesn/a1.34 inchesNA
Touchn/aNA
Typen/aCapacitative TFTLEDOLEDNA

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance3 ATMIPX75 ATM5 ATMIP67

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/an/aProprietaryNA
Apps
Music

All Wearables