Forerunner 225 Activite Steel Charge 3 Charge Flex
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Basic Info

Suggested Price $300 $170 $150 $130 $100
Release 2015 2015 2018 2014 2013

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration 10 hours to 4 weeks 8 months 7 days 7-10 days 5 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC NA
Wi-Fi

Display

Color
Resolution 180 x 180 n/a 66 x 18 NA NA
Size 1 inch 1.3 inches .721 inches NA NA
Touch NA NA
Type n/a Analog OLED OLED LED

Functions

Audio Speaker 22
Clock
Phone n/a
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance 5 ATM 5 ATM 5 ATM 1 ATM 1 ATM

Notifications

Phone n/a
Emails n/a
Texts n/a

Software

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

All Wearables