Pebble Time Round vs. Fitbit Alta vs. Fitbit Ionic vs. Garmin 645 Music vs. Garmin Vivosmart 4

 
Time Round
Alta
Ionic
645 Music
Vivosmart 4
 PebbleTime RoundRemove Buy NowFitbitAltaRemove Buy NowFitbitIonicRemove Buy NowGarmin645 MusicRemove Buy NowGarminVivosmart 4Remove Buy Now

Basic Info

Suggested Price$200$130$299$450$130
Release20152016201720182018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2 days5 days4+ days7 days7 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/an/a348x250240 x 24048 x 128
Sizeroundn/a1.421.2 inches0.74 inches
Touchn/a
Typee-paperOLEDOLEDMIPOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX7n/a50m5 ATM5 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating SystemPebble OSn/aFitbit OS
Apps
Music

All Wearables