On Full Guard
Watch 2
Mi Band 4
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Basic Info

Suggested Price$325$350$25
Release201720172019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration1 day48 hours20 days
Rechargeable

Compatibility

Android
iOS
Windows Phone
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution454 x 454480 x 480120x240
Size1.4 inches1.38 inches0.95 inches
Touch
TypeOMOLEDP-OLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIP67IP685 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemAndroid Wear 2.0Android Wear 2AMAZFIT OS
Apps
Music

All Wearables