Polar M400 vs. Motorola Moto 360 (1st Gen) vs. Pebble Time 2 vs. Fitbit Charge 3 vs. HTC re Grip

 
M400
Moto 360 (1st Gen)
Time 2
Charge 3
re Grip
 PolarM400Remove Buy NowMotorolaMoto 360 (1st Gen)Remove Buy NowPebbleTime 2Remove Buy NowFitbitCharge 3Remove Buy NowHTCre GripRemove Buy Now

Basic Info

Suggested Price$200$150$199$150$199
Release20142014201620182020

Activity & Fitness

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

Battery

Duration8 hours to 30 days1 day10 days7 days5 hours to 2.5 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNANANA
MacNANANA
WindowsNANANot yetNA

Connectivity

Bluetooth
Cellular
GPS
NFCNA
Wi-Fi

Display

Color
Resolutionn/a320 x 260NA66 x 18160 x 32
Sizen/a1.56 inchesNA.721 inches1.8 inches
Touch
Typen/aLCDe-paperOLEDPMOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance3 ATMIP673 ATM5 ATMIP57

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aAndroid WearPebble OSNANA
Apps
MusicNA

All Wearables