Samsung Gear S2 vs. Sony SmartBand vs. Xiaomi Mi Band 4 vs. Apple Watch 7

 
Gear S2
SmartBand
Mi Band 4
Watch 7
 SamsungGear S2Remove Buy NowSonySmartBandRemove Buy NowXiaomiMi Band 4Remove Buy NowAppleWatch 7Remove Buy Now

Basic Info

Suggested Price$300$100$25$429
Release2015201420192021

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration2-3 days5 days20 days18 Hours
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellularn/a
GPSn/a
NFC
Wi-Fi

Display

ColorNA
Resolution360 x 360NA120x240396 x 484
Size1.2 inchesNA0.95 inches1.9 inches
TouchNA
TypeSuper AMOLEDNAAMOLEDMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP68IP585 ATMwater resistant but not waterproof

Notifications

Phone
Emails
Texts

Software

Operating SystemTizenNAAMAZFIT OSWatchOS 8
Apps
Music

All Wearables