Samsung Gear S2 vs. Samsung Gear S3 vs. Fitbit Flex 2 vs. Fitbit Alta HR vs. Apple Watch 7

 
Gear S2
Gear S3
Flex 2
Alta HR
Watch 7
 SamsungGear S2Remove Buy NowSamsungGear S3Remove Buy NowFitbitFlex 2Remove Buy NowFitbitAlta HRRemove Buy NowAppleWatch 7Remove Buy Now

Basic Info

Suggested Price$300$350$100$150$429
Release20152016201620172021

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleepn/a
Steps
Swim

Battery

Duration2-3 days4 days5 days7 days18 Hours
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellularn/an/a
GPSn/a
NFCn/a
Wi-Fi

Display

Colorn/a
Resolution360 x 360360 x 360n/a128 x 36396 x 484
Size1.2 inches1.3 inchesn/a1.4 inches1.9 inches
Touchn/a
TypeSuper AMOLEDFullcolor AODLEDOLEDMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP68IP685 ATMwater resistant but not waterproof

Notifications

Phone
Emails
Texts

Software

Operating SystemTizenTizenn/aWatchOS 8
Apps
Music

All Wearables