Polaroid B521 vs Xiaomi Mi Band 3

Polaroid B521 Xiaomi Mi Band 3

Basic Info

Wear TypeWristbandWristband
Price$2553
Ratings

Activity & Fitness

Activity Yes YesBoth track daily activity
Calories Yes YesBoth show estimated calories burned
Sleep Yes YesBoth track sleep pattern
Heart Rate / Pulse Yes YesBoth measure heart rate
Distance Yes YesBoth track your stride length
Steps Yes YesBoth track and count your steps
Stairs / Floors No NoBoth don't have elevation feature
Exercise Tagging No NoBoth don't have exercise tagging
Smart Coach No NoBoth don't have coaching feature
Goal Setting No YesSet and keep your own daily or weekly goals with Xiaomi Mi Band 3
Inactivity Alert Yes YesBoth have move reminders

Additional Features

GPS No NoBoth don't have built-in GPS support
Compass No NoBoth don't have a compass
Watch / Clock Yes YesBoth have watch
Alarm Clock Yes YesBoth have alarm clock
Reminders Yes YesBoth have reminder app
Stopwatch Yes YesBoth have stopwatch
Music Playback No NoBoth don't have music playback
Weather No Yes*Weather forecast
ReportsActivity, SleepActivity, Sleep

Smartphone Remote Features

Notifications Yes YesBoth show smartphone notifications
Caller ID Yes YesBoth show caller ID notification
Music Control Yes NoPolaroid B521 allows control smartphone music player
Call Control No YesXiaomi Mi Band 3 allows you control phone calls
Camera Control Yes YesBoth devices can control your smartphone's camera
Find Phone No YesXiaomi Mi Band 3 allows you to locate your phone

Battery

Durationn/a20 days
Battery TypeRechargeable BatteryRechargeable Battery

Physical Specs

Weather Resistance Yes Yes
Waterproof No Yes
IP Ratingn/a5 ATM
Weightn/a20 grams

User Interface

DisplayOLED ScreenOLED Screen
Display Size0,91 inches0,78 inches
Screen Resolution 128*32 pixels 128 x 80 pixels
Color Display No No
Touch Screen No Yes

Compatibility

Android Yes YesBoth compatible with Android devices
iOS Yes YesBoth compatible iOS devices
OS X/Mac No NoBoth don't compatible MAC OS X devices
Windows Phone No NoBoth don't compatible with Windows Phone devices
Windows No NoBoth don't have a find phone feature
Web Portal No NoBoth don't have online web portal option
Social Features No NoBoth don't have social features

Connectivity

Bluetooth Yes YesBoth have Bluetooth data transfer technology
Wi-Fi No NoBoth don't have Wi-Fi connection
NFC No YesOnly Xiaomi Mi Band 3 has NFC (Near Field Communication)
ANT+ No NoBoth don't provide ANT+ wireless technology
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Polaroid B521

Xiaomi Mi Band 3