Polar Loop 2 vs. Amazfit Bip vs. Asus VivoWatch vs. Fitbit Charge vs. Amazfit T-Rex

 
Loop 2
Bip
VivoWatch
Charge
T-Rex
 PolarLoop 2Remove Buy NowAmazfitBipRemove Buy NowAsusVivoWatchRemove Buy NowFitbitChargeRemove Buy NowAmazfitT-RexRemove Buy Now

Basic Info

Suggested Price$120$99.99$160$130$140
Release20152018201820142019

Activity & Fitness

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

Battery

Duration8 days (without notifications)30 days24 hours to 10 days7-10 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNANA
Macn/aNA
Windowsn/aNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/a176 x 176128 x 128NA360 x 360
Sizen/a1.28 inchesNANA1.3 inches
TouchNA
TypeLEDNANAOLEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or AltimeterNA
Ultraviolet Sensor
Water Resistance2 ATMIP68IP671 ATM5 ATM

Notifications

Phone
Emails
Texts

Software

Operating Systemn/aKoodOSNABuild-in
Apps
Music

All Wearables