Watch Series 2 ZenWatch 2 Flex 2 Charge 2 Charge 3
  Apple Watch Series 2 Remove Buy Now ASUS ZenWatch 2 Remove Buy Now Fitbit Flex 2 Remove Buy Now Fitbit Charge 2 Remove Buy Now Fitbit Charge 3 Remove Buy Now

Basic Info

Suggested Price $269 $150 $100 $150 $150
Release 2016 2016 2016 2016 2018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration 18 hours n/a 5 days 5 days 7 days
Rechargeable

Compatibility

Android
iOS
Windows Phone n/a n/a
Mac n/a
Windows n/a Not yet

Connectivity

Bluetooth
Cellular
GPS
NFC NA
Wi-Fi

Display

Color n/a
Resolution 340 x 272 or 390 x 312 320 x 320 n/a n/a 66 x 18
Size 1.5 inches or 1.65 inches 1.63 inches or 1.45 inch n/a n/a .721 inches
Touch n/a n/a
Type AMOLED AMOLED LED OLED OLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

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

Notifications

Phone
Emails n/a
Texts n/a

Software

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

All Wearables