ZenWatch 2 Watch Vivofit 3 Charge UP4
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Basic Info

Suggested Price $150 $349 $100 $130 $200
Release 2016 2015 2016 2014 2015

Activity & Fitness

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

Battery

Duration n/a n/a 1 year 7-10 days NA
Rechargeable

Compatibility

Android
iOS
Windows Phone n/a n/a NA NA
Mac n/a n/a n/a NA
Windows n/a n/a n/a NA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution 320 x 320 400 x 400 64 x 64 NA NA
Size 1.63 inches or 1.45 inch 1.4 inches 0.55 inches NA NA
Touch NA NA
Type AMOLED AMOLED n/a OLED NA

Functions

Audio Speaker n/a
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance IP67 n/a 5 ATM 1 ATM NA

Notifications

Phone
Emails n/a
Texts n/a

Software

Operating System Android Wear Android Wear n/a NA NA
Apps
Music n/a NA

All Wearables