Polar M400 vs. Apple Watch vs. Casio G-Shock GBA800 vs. Pebble Time 2 vs. Jawbone UP4

 
M400
Watch
G-Shock GBA800
Time 2
UP4
 PolarM400Remove Buy NowAppleWatchRemove Buy NowCasioG-Shock GBA800Remove Buy NowPebbleTime 2Remove Buy NowJawboneUP4Remove Buy Now

Basic Info

Suggested Price$200$349$120$199$200
Release20142015201820162015

Activity & Fitness

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

Battery

Duration8 hours to 30 days18 hours2 years10 daysNA
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNANANA
MacNANANA
WindowsNANANA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a340 x 272 or 390 x 312NANA
Sizen/a1.5 inches or 1.65 inchesNANA
TouchNA
Typen/aAMOLEDe-paperNA

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance3 ATMIPX720 ATM3 ATMNA

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aWatch OSPebble OSNA
Apps
MusicNA

All Wearables