Time Round SmartWatch 3 Vivofit 3 Vivosmart HR ZenWatch
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Basic Info

Suggested Price $200 $250 $100 $170 $150
Release 2015 2014 2016 2015 2014

Activity & Fitness

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

Battery

Duration 2 days 2 days 1 year 5 days NA
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution n/a 320 x 320 64 x 64 160 x 68 320 x 320
Size round 1.6 inches 0.55 inches 1.08 inches 1.63 inches
Touch
Type e-paper TFT LCD n/a n/a AMOLED

Functions

Audio Speaker Bluetooth
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance IPX7 IP68 5 ATM 5 ATM IP55

Notifications

Phone
Emails NA
Texts NA

Software

Operating System Pebble OS Android Wear n/a n/a Android Wear
Apps
Music

All Wearables