Charge 3
Vivosmart 4
Loop
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Basic Info

Suggested Price$150$130$100
Release201820182013

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration7 days7 days5 days
Rechargeable

Compatibility

Android
iOS
Windows PhoneNA
MacNA
WindowsNot yetNA

Connectivity

Bluetooth
Cellular
GPS
NFCNA
Wi-Fi

Display

Color
Resolution66 x 1848 x 128NA
Size.721 inches0.74 inchesNA
Touch
TypeOLEDOLEDLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATM2 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemNANA
Apps
Music

All Wearables