Apple Watch Series 3 vs. Fitbit Flex 2 vs. Amazfit Bip vs. Jaybird Reign vs. Xiaomi Mi Band 4

 
Watch Series 3
Flex 2
Bip
Reign
Mi Band 4
 AppleWatch Series 3Remove Buy NowFitbitFlex 2Remove Buy NowAmazfitBipRemove Buy NowJaybirdReignRemove Buy NowXiaomiMi Band 4Remove Buy Now

Basic Info

Suggested Price$329$100$99.99$150$25
Release20172016201820152019

Activity & Fitness

Calories
Cycling (Bicycling)
Distance
Heart
Oxygen
Sleep
Steps
Swim

Battery

Duration18 hours5 days30 days5 days20 days
Rechargeable

Compatibility

Android
iOS
Windows Phonen/aNA
MacNA
WindowsNA

Connectivity

Bluetooth
Cellular
GPS
NFC
Wi-Fi

Display

Colorn/a
Resolution340 x 272 or 390 x 312n/a176 x 176NA120x240
Size1.5 inches or 1.65 inchesn/a1.28 inchesNA0.95 inches
Touchn/aNA
TypeAMOLEDLEDNALEDAMOLED

Functions

Audio Speaker
Clock
Phone
Vibration
Voice

Hardware

Accelerometer
Barometer or Altimeter
Ultraviolet Sensor
Water Resistance5 ATM5 ATMIP68NA5 ATM

Notifications

Phone
Emails
Texts

Software

Operating SystemWatchOS 4n/aNAAMAZFIT OS
Apps
Music

All Wearables