Forerunner 225 M400 Activite Steel Alta Flex
  Garmin Forerunner 225 Remove Buy Now Polar M400 Remove Buy Now Withings Activite Steel Remove Buy Now Fitbit Alta Remove Buy Now Fitbit Flex Remove Buy Now

Basic Info

Suggested Price $300 $200 $170 $130 $100
Release 2015 2014 2015 2016 2013

Activity & Fitness

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

Battery

Duration 10 hours to 4 weeks 8 hours to 30 days 8 months 5 days 5 days
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

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

Functions

Audio Speaker 22 Alerts only
Clock
Phone n/a
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance 5 ATM 3 ATM 5 ATM n/a 1 ATM

Notifications

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

Software

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

All Wearables