Pebble Time Round vs. Polar M400 vs. Microsoft Band 2 vs. Fitbit Alta HR

 
Time Round
M400
Band 2
Alta HR
 PebbleTime RoundRemove Buy NowPolarM400Remove Buy NowMicrosoftBand 2Remove Buy NowFitbitAlta HRRemove Buy Now

Basic Info

Suggested Price$200$200$250$150
Release2015201420152017

Activity & Fitness

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

Battery

Duration2 days8 hours to 30 days48 hours (without GPS)7 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/an/a320 x 128128 x 36
Sizeroundn/a1.36 inches1.4 inches
Touch
Typee-papern/aCapacitative TFTOLED

Functions

Audio SpeakerAlerts only
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX73 ATMIPX7

Notifications

Phone
Emails
Texts

Software

Operating SystemPebble OSn/an/a
Apps
Music

All Wearables