Samsung Gear S vs. Xiaomi Mi Band 2 vs. Fitbit Alta HR vs. Apple Watch Series 4 vs. Apple Watch 7

 
Gear S
Mi Band 2
Alta HR
Watch Series 4
Watch 7
 SamsungGear SRemove Buy NowXiaomiMi Band 2Remove Buy NowFitbitAlta HRRemove Buy NowAppleWatch Series 4Remove Buy NowAppleWatch 7Remove Buy Now

Basic Info

Suggested Price$250$23$150$329$429
Release20132016201720182021

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Stepsn/a
Swim

Battery

Durationn/a20 hours7 daysNot Yet18 Hours
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution480 x 360n/a128 x 36384 x 480396 x 484
Size2 inches0.42 inches1.4 inches1.78 inches1.9 inches
Touch
TypeSuper AMOLEDOLEDOLEDMicroLEDMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP67IP67Not Yetwater resistant but not waterproof

Notifications

Phone
Emails
Texts

Software

Operating SystemTizenn/aWatch OS 5WatchOS 8
Apps
Music

All Wearables