Polar Loop vs Mi Smart Band 4 comparison

Show Only Differences Highlight Differences	Polar Loop	Mi Smart Band 4
key specs
Water Resistant	Yes	Yes
Heart Rate Monitor	Yes	Yes
Display Type	-	AMOLED
Compatible Devices	-	Android, iOS Phones
Battery Life (Days)	-	20
general
Brand	Polar	Mi
Model	Loop	Smart Band 4
Release date	December 5, 2025	-
Model Name	Polar Loop	Band 4
Material	Stainless Steel	Thermoplastic
Suitable For	Unisex	Health, Lifestyle
Water Resistant	Yes	Yes
Color	-	Black
Ideal For	-	Unisex
Touch Enabled	-	Yes
Dial Shape	-	Rectangle
display and battery features
Battery Type	Lithium Polymer (Li-poly)	Lithium Ion (Li-ion)
Charge Time (hours)	8	2
Battery Capacity (mAh)	170	135
Display Resolution	-	120 x 240 RGB
Display Type	-	AMOLED
Battery Life (Days)	-	20
performance features
Water-Resistant Depth (metres)	30	50
Operating Temperature (Celsius)	-20 °C - 50 °C	-
Shock Resistant	-	Yes
activity tracking function
Blood Pressure Monitor	Yes	-
Calories Burned	Yes	Yes
Distance Covered	Yes	Yes
Heart Rate Monitor	Yes	Yes
Sleep Tracking	Yes	Yes
SPO2 Monitor	Yes	-
Step Counter	Yes	Yes
Phone Notifications	-	Yes
workout modes
Treadmill	Yes	Yes
Exercise	Yes	Yes
Outdoor Running	Yes	Yes
Cycling	Yes	Yes
Walking	Yes	Yes
Swimming	-	Yes
sensors
Electrical Heart Rate Sensor	Yes	-
Gyroscope	Yes	Yes
Optical Heart Rate Sensor	Yes	Yes
Pedometer	Yes	-
Vibration Motor	Yes	-
Accelerometer	-	Yes
dimensions
Weight (grams)	29	22.1
Width (mm)	27	45.72
Height (mm)	42	12.7
Depth (mm)	9	17.78
ratings
Overall NDTV Rating	-	Read Review
Design and comfort Rating	-
Tracking accuracy Rating	-
Companion app Rating	-
Battery life Rating	-
connectivity features
Wi-Fi Enabled	-	No
Bluetooth Enabled	-	Yes
Bluetooth Version	-	v5.0
compatibility
Compatible Devices	-	Android, iOS Phones

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