Polar Loop vs Mi Smart Band 3i comparison

Show Only Differences Highlight Differences	Polar Loop	Mi Smart Band 3i
key specs
Water Resistant	Yes	Yes
Heart Rate Monitor	Yes	No
Display Type	-	AMOLED
Compatible Devices	-	Android phones, iPhone
Battery Life (Days)	-	20
general
Brand	Polar	Mi
Model	Loop	Smart Band 3i
Release date	December 5, 2025	November 1, 2019
Model Name	Polar Loop	Band 3i
Material	Stainless Steel	Thermoplastic
Suitable For	Unisex	Sports, Fitness
Water Resistant	Yes	Yes
Color	-	Black
Reading Type	-	Digital
Ideal For	-	Unisex
Touch Enabled	-	Yes
Function	-	Show Time/Date, Alarm Clock, Display / Reject Calls, View Messages, Idle Alert, Phone Unlock, Event Reminders, Phone Locator, Weather Forecast, App Notifications,
Dial Shape	-	Oval
display and battery features
Battery Type	Lithium Polymer (Li-poly)	Lithium Ion (Li-ion)
Charge Time (hours)	8	2.5
Battery Capacity (mAh)	170	110
Display Resolution	-	128 x 80 Pixels
Display Type	-	AMOLED
Backlight Present	-	Yes
Battery Life (Days)	-	20
performance features
Water-Resistant Depth (metres)	30	-
Operating Temperature (Celsius)	-20 °C - 50 °C	-
activity tracking function
Blood Pressure Monitor	Yes	-
Calories Burned	Yes	Yes
Distance Covered	Yes	Yes
Heart Rate Monitor	Yes	No
Sleep Tracking	Yes	Yes
SPO2 Monitor	Yes	-
Step Counter	Yes	Yes
Alarms	-	Yes
Do Not Disturb Mode	-	Yes
Phone Notifications	-	Yes
Reminders	-	Yes
Sedentary Reminder	-	Yes
workout modes
Treadmill	Yes	Yes
Exercise	Yes	Yes
Outdoor Running	Yes	Yes
Cycling	Yes	Yes
Walking	Yes	Yes
sensors
Electrical Heart Rate Sensor	Yes	-
Gyroscope	Yes	-
Optical Heart Rate Sensor	Yes	-
Pedometer	Yes	Yes
Vibration Motor	Yes	-
Accelerometer	-	Yes
dimensions
Weight (grams)	29	-
Width (mm)	27	-
Height (mm)	42	-
Depth (mm)	9	-
connectivity features
Wi-Fi Enabled	-	No
Bluetooth Enabled	-	Yes
Bluetooth Version	-	v4.2
compatibility
Compatible Devices	-	Android phones, iPhone
Compatible Android Version	-	Android 4.4 and above
Compatible iOS Version	-	iOS 9.0 and above

Popular Smart Band Brands