Apple Watch Series 3 vs. Fitbit Charge 2 vs. Fitbit Ionic vs. Casio G-Shock GBA800 vs. Fitbit Alta HR

 
Watch Series 3
Charge 2
Ionic
G-Shock GBA800
Alta HR
 AppleWatch Series 3Remove Buy NowFitbitCharge 2Remove Buy NowFitbitIonicRemove Buy NowCasioG-Shock GBA800Remove Buy NowFitbitAlta HRRemove Buy Now

Basic Info

Suggested Price$329$150$299$120$150
Release20172016201720182017

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration18 hours5 days4+ days2 years7 days
Rechargeable

Compatibility

Android
iOS
Windows Phone
Mac
Windows

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution340 x 272 or 390 x 312n/a348x250128 x 36
Size1.5 inches or 1.65 inchesn/a1.421.4 inches
Touchn/a
TypeAMOLEDOLEDOLEDOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMn/a50m20 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemWatchOS 4n/aFitbit OS
Apps
Music

All Wearables