Polar M400 vs. Moov Now vs. Withings Go vs. Casio WSD-F20A vs. Samsung Gear 2

 
M400
Now
Go
WSD-F20A
Gear 2
 PolarM400Remove Buy NowMoovNowRemove Buy NowWithingsGoRemove Buy NowCasioWSD-F20ARemove Buy NowSamsungGear 2Remove Buy Now

Basic Info

Suggested Price$200$79$80$399$300
Release20142015201620182014

Activity & Fitness

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

Battery

Duration8 hours to 30 days6 months8 months1 day2-3 days
Rechargeable

Compatibility

Androidn/a
iOSn/a
Windows Phonen/an/an/aNA
Macn/an/aNA
Windowsn/an/aNA

Connectivity

Bluetoothn/a
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolutionn/an/an/a320 x 320320 x 320
Sizen/an/an/a1.32 inches1.63 inches
Touchn/an/a
Typen/an/aE-InkLCDSuper AMOLED

Functions

Audio SpeakerAlerts onlyBluetooth
Clock
Phonen/a
Vibrationn/an/a
Voice

Hardware

Accelerometer
Barometer or Altimetern/a
Ultraviolet Sensor
Water Resistance3 ATMn/a5 ATM5 ATMIP67

Notifications

Phonen/a
Emailsn/a
Textsn/a

Software

Operating Systemn/an/an/aWear OSTizen OS
Appsn/a
Music

All Wearables