Samsung Gear S2 vs. Xiaomi Mi Band 2 vs. Garmin 645 Music vs. Fitbit Alta HR vs. Garmin Vivosmart 3

 
Gear S2
Mi Band 2
645 Music
Alta HR
Vivosmart 3
 SamsungGear S2Remove Buy NowXiaomiMi Band 2Remove Buy NowGarmin645 MusicRemove Buy NowFitbitAlta HRRemove Buy NowGarminVivosmart 3Remove Buy Now

Basic Info

Suggested Price$300$23$450$150$139.99
Release20152016201820172017

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Stepsn/a
Swim

Battery

Duration2-3 days20 hours7 days7 days5 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellularn/a
GPSn/a
NFC
Wi-Fi

Display

Color
Resolution360 x 360n/a240 x 240128 x 3664 x 128
Size1.2 inches0.42 inches1.2 inches1.4 inchesNA
Touch
TypeSuper AMOLEDOLEDMIPOLEDOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP68IP675 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemTizenn/a
Apps
Music

All Wearables