Microsoft Band 2 vs. Fitbit Ionic vs. Casio G-Shock GBA800 vs. Garmin 645 Music vs. Amazfit T-Rex

 
Band 2
Ionic
G-Shock GBA800
645 Music
T-Rex
 MicrosoftBand 2Remove Buy NowFitbitIonicRemove Buy NowCasioG-Shock GBA800Remove Buy NowGarmin645 MusicRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$250$299$120$450$140
Release20152017201820182019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration48 hours (without GPS)4+ days2 years7 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phone
Macn/a
Windowsn/a

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolution320 x 128348x250240 x 240360 x 360
Size1.36 inches1.421.2 inches1.3 inches
Touch
TypeCapacitative TFTOLEDMIPAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water ResistanceIPX750m20 ATM5 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aFitbit OSBuild-in
Apps
Music

All Wearables