Pebble Time vs. Polar M600 vs. Withings Activite Sapphire vs. Polar Loop 2 vs. Apple Watch Series 4

 
Time
M600
Activite Sapphire
Loop 2
Watch Series 4
 PebbleTimeRemove Buy NowPolarM600Remove Buy NowWithingsActivite SapphireRemove Buy NowPolarLoop 2Remove Buy NowAppleWatch Series 4Remove Buy Now

Basic Info

Suggested Price$150$330$450$120$329
Release20152016201420152018

Activity & Fitness

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

Battery

Duration7 days2 days8 months8 days (without notifications)Not Yet
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution168 x 144240 x 240n/an/a384 x 480
Size1.26 inches1.3 inches1.3 inchesn/a1.78 inches
Touchn/a
Typee-paperTFTAnalogLEDMicroLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMIPX85 ATM2 ATMNot Yet

Notifications

Phone
Emails
Texts

Software

Operating SystemPebble OSAndroid Wearn/an/aWatch OS 5
Apps
Music

All Wearables