Polar M400 vs. Polar M600 vs. Withings Activite Sapphire vs. Withings Activite Steel

 
M400
M600
Activite Sapphire
Activite Steel
 PolarM400Remove Buy NowPolarM600Remove Buy NowWithingsActivite SapphireRemove Buy NowWithingsActivite SteelRemove Buy Now

Basic Info

Suggested Price$200$330$450$170
Release2014201620142015

Activity & Fitness

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

Battery

Duration8 hours to 30 days2 days8 months8 months
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a240 x 240n/an/a
Sizen/a1.3 inches1.3 inches1.3 inches
Touchn/a
Typen/aTFTAnalogAnalog

Functions

Audio SpeakerAlerts onlyAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance3 ATMIPX85 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aAndroid Wearn/an/a
Apps
Music

All Wearables