Samsung Gear S2 vs. Garmin Forerunner 935 vs. Garmin 645 Music vs. Fitbit Flex vs. Xiaomi Mi Band 3

 
Gear S2
Forerunner 935
645 Music
Flex
Mi Band 3
 SamsungGear S2Remove Buy NowGarminForerunner 935Remove Buy NowGarmin645 MusicRemove Buy NowFitbitFlexRemove Buy NowXiaomiMi Band 3Remove Buy Now

Basic Info

Suggested Price$300$500$450$100$44.95
Release20152017201820132018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2-3 daysUp to 2 weeks7 days5 days20 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellularn/a
GPSn/a
NFC
Wi-Fi

Display

Color
Resolution360 x 360240 x 240240 x 240NA128 x 80
Size1.2 inches1.2 inches1.2 inchesNA0.78 inches
TouchNA
TypeSuper AMOLEDLCDMIPLEDOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP685 ATM5 ATM1 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemTizenNA
Apps
Music

All Wearables