Samsung Gear S vs. Samsung Gear S2 vs. Garmin 645 Music vs. Garmin Forerunner 235 vs. Fitbit Flex

 
Gear S
Gear S2
645 Music
Forerunner 235
Flex
 SamsungGear SRemove Buy NowSamsungGear S2Remove Buy NowGarmin645 MusicRemove Buy NowGarminForerunner 235Remove Buy NowFitbitFlexRemove Buy Now

Basic Info

Suggested Price$250$300$450$299.99$100
Release20132015201820172013

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Durationn/a2-3 days7 days9 days5 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellularn/a
GPSn/a
NFC
Wi-Fi

Display

Color
Resolution480 x 360360 x 360240 x 240215 x 180NA
Size2 inches1.2 inches1.2 inches1.23 inchesNA
TouchNA
TypeSuper AMOLEDSuper AMOLEDMIPMIPLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP67IP685 ATM5 ATM1 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemTizenTizenNA
Apps
Music

All Wearables