Samsung Gear S2 vs. Apple Watch Series 2 vs. Garmin Forerunner 235 vs. Fitbit Alta HR vs. Garmin Forerunner 45

 
Gear S2
Watch Series 2
Forerunner 235
Alta HR
Forerunner 45
 SamsungGear S2Remove Buy NowAppleWatch Series 2Remove Buy NowGarminForerunner 235Remove Buy NowFitbitAlta HRRemove Buy NowGarminForerunner 45Remove Buy Now

Basic Info

Suggested Price$300$269$299.99$150$199
Release20152016201720172019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2-3 days18 hours9 days7 days7 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellularn/a
GPSn/a
NFC
Wi-Fi

Display

Color
Resolution360 x 360340 x 272 or 390 x 312215 x 180128 x 36208 x 208
Size1.2 inches1.5 inches or 1.65 inches1.23 inches1.4 inches1.04 inches
Touch
TypeSuper AMOLEDAMOLEDMIPOLEDLCD

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP685ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemTizenWatch OSBuilt-in
Apps
Music

All Wearables