Polar Loop 2 vs. Xiaomi Mi Band 2 vs. Amazfit Bip vs. Jawbone UP2 vs. Apple Watch Series 4

 
Loop 2
Mi Band 2
Bip
UP2
Watch Series 4
 PolarLoop 2Remove Buy NowXiaomiMi Band 2Remove Buy NowAmazfitBipRemove Buy NowJawboneUP2Remove Buy NowAppleWatch Series 4Remove Buy Now

Basic Info

Suggested Price$120$23$99.99$100$329
Release20152016201820152018

Activity & Fitness

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

Battery

Duration8 days (without notifications)20 hours30 days7 daysNot Yet
Rechargeable

Compatibility

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

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Color
Resolutionn/an/a176 x 176NA384 x 480
Sizen/a0.42 inches1.28 inchesNA1.78 inches
TouchNA
TypeLEDOLEDNANAMicroLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance2 ATMIP67IP68Splash resistantNot Yet

Notifications

Phone
Emails
Texts

Software

Operating Systemn/an/aNAWatch OS 5
Apps
Music

All Wearables