Pebble Time Round vs. Fitbit Alta vs. Garmin 645 Music vs. Samsung Gear 2 vs. Garmin Vivosmart 4

 
Time Round
Alta
645 Music
Gear 2
Vivosmart 4
 PebbleTime RoundRemove Buy NowFitbitAltaRemove Buy NowGarmin645 MusicRemove Buy NowSamsungGear 2Remove Buy NowGarminVivosmart 4Remove Buy Now

Basic Info

Suggested Price$200$130$450$300$130
Release20152016201820142018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
StepsNA
Swim

Battery

Duration2 days5 days7 days2-3 days7 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
Macn/aNA
Windowsn/aNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/an/a240 x 240320 x 32048 x 128
Sizeroundn/a1.2 inches1.63 inches0.74 inches
Touchn/a
Typee-paperOLEDMIPSuper AMOLEDOLED

Functions

Audio SpeakerBluetooth
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX7n/a5 ATMIP675 ATM

Notifications

Phone
Emailsn/a
Texts

Software

Operating SystemPebble OSn/aTizen OS
Apps
Music

All Wearables