Pebble Steel vs. Polar M400 vs. Microsoft Band 2 vs. Sony SmartBand Talk vs. Xiaomi Mi Band 4

 
Steel
M400
Band 2
SmartBand Talk
Mi Band 4
 PebbleSteelRemove Buy NowPolarM400Remove Buy NowMicrosoftBand 2Remove Buy NowSonySmartBand TalkRemove Buy NowXiaomiMi Band 4Remove Buy Now

Basic Info

Suggested Price$150$200$250$170$25
Release20142014201520142019

Activity & Fitness

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

Battery

Duration5-7 days8 hours to 30 days48 hours (without GPS)3 days20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution168 x 144n/a320 x 128296 x 128120x240
Size1.26 inchesn/a1.36 inches1.4 inches0.95 inches
Touch
Typee-papern/aCapacitative TFTE InkAMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM3 ATMIPX7IP685 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemPebble OSn/an/aAndroid WearAMAZFIT OS
Apps
Music

All Wearables