Polar M400 vs. Samsung Gear S2 vs. Samsung Gear S3 vs. Moov Now vs. Fitbit Alta HR

 
M400
Gear S2
Gear S3
Now
Alta HR
 PolarM400Remove Buy NowSamsungGear S2Remove Buy NowSamsungGear S3Remove Buy NowMoovNowRemove Buy NowFitbitAlta HRRemove Buy Now

Basic Info

Suggested Price$200$300$350$79$150
Release20142015201620152017

Activity & Fitness

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

Battery

Duration8 hours to 30 days2-3 days4 days6 months7 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellularn/an/a
GPSn/a
NFCn/a
Wi-Fi

Display

Color
Resolutionn/a360 x 360360 x 360n/a128 x 36
Sizen/a1.2 inches1.3 inchesn/a1.4 inches
Touchn/a
Typen/aSuper AMOLEDFullcolor AODn/aOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibrationn/a
Voice

Hardware

Accelerometer
Barometer or Altimetern/a
Ultraviolet Sensor
Water Resistance3 ATMIP68IP68n/a

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aTizenTizenn/a
Apps
Music

All Wearables