Polar Loop
Quick details
Released
September 2025
Dimensions
27 x 42 x 9 mm
Operating system
Proprietary
Display No display
Battery life Up to 8 days
Water resistance 3 ATM
GPS No
Sensors Accelerometer, optical heart rate, skin temperature (SDK only)
Technical specifications
General
Release date 2025-09-10
Product type Screenless fitness tracker
Physical size 27 x 42 x 9 mm
Weight 29 grams
Material Stainless steel, ABS+10%GT, PMMA
Water resistance 3 ATM
Color options Night Black, Greige Sand, Brown Copper
Display type No display
Display size None
Display resolution None
Battery Rechargeable lithium-polymer battery; 170 mAh
Battery life Up to 8 days
Charging Custom Polar USB cable
Sensors
GNSS type None
GPS No
GALILEO No
GLONASS No
QZSS No
Beidou No
Accelerometer Yes
Gyroscope No
Barometric altimeter No
Compass No
Geomagnetic No
Ambient light sensor No
Optical heart rate Yes
Electrical heart rate No
SpO2 No
Temperature Yes (skin temperature sensor; SDK only)
Galvanic skin response No
Microphone No
Speakers No
Vibration motor No
Health & activity tracking
Steps Yes
Distance Yes
Calories burned Yes
Floors No
Sports tracking Yes
Sleep Yes
Heart rate Yes
HRV Yes (Nightly Recharge)
Stress Yes (Nightly Recharge / ANS charge)
Blood oxygen No
Respiration rate Yes (during Nightly Recharge)
Skin temperature Yes (GEN 1 sensor; SDK only)
ECG No
Blood pressure No
Body composition No
Glucose No
Hydration level No
UV exposure No
Calorie intake No
Training Load Pro Yes (Polar Flow app)
Recovery Pro No
Nightly Recharge Yes
SleepWise Yes (Polar Flow app)
FitSpark No
FuelWise No
Hill Splitter No
Wrist-based running power No
Running Performance Test No
Cycling Performance Test No
Walking Test No
Orthostatic Test No
Leg Recovery Test No
Running Index No
Energy Sources Yes (Polar Flow app)
Sleep Plus Stages Yes
Hyperglycemia risk assessment No
Arterial stiffness detection No
Pulse wave arrhythmia analysis No
Daily smart features
Operating system at launch Proprietary
Processor 64 MHz
RAM 1.3 MB
Storage 16 MB
Bluetooth Yes (5.1)
Wi-Fi No
NFC / connected pay No
UWB No
Cellular No
Smartphone notifications No
Bluetooth calling No
Smartphone music control No
On-board music storage No
Voice assistant No
Links
These technical specs are correct to the best of our knowledge at the time of publishing.
