Image of a Forerunner 225
Image of a Charge 2
Image of a Bip
Image of a 645 Music
Image of a Galaxy Watch
 GarminForerunner 225Remove Buy NowFitbitCharge 2Remove Buy NowAmazfitBipRemove Buy NowGarmin645 MusicRemove Buy NowSamsungGalaxy WatchRemove Buy Now

Basic Info

Suggested Price$300$150$99.99$450$330
Release20152016201820182018

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration10 hours to 4 weeks5 days30 days7 days7 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/a
Macn/a
Windowsn/a

Connectivity

Bluetooth
CellularNA
GPS
NFC
Wi-Fi

Display

Color
Resolution180 x 180n/a176 x 176240 x 240360 x 360
Size1 inchn/a1.28 inches1.2 inches1.2 inches or 1.3 inches
Touchn/a
Typen/aOLEDNAMIPAMOLED

Functions

Audio Speaker22
Clock
Phonen/a
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATMn/aIP685 ATM5 ATM

Notifications

Phonen/a
Emailsn/a
Textsn/a

Software

Operating Systemn/an/aTizen OS
Appsn/a
Musicn/aSpotify

All Wearables