I have read a few papers that have indicated that the sampling rate of the Polar h10 is 1000 Hz.

1) Navalta et al., Heart rate processing algorithms and exercise duration on reliability and validity decisions in biceps-worn Polar Verity Sense and OH1 wearables. Sci Rep. 2023 Jul 20;13(1):11736;

2) Schaffarczyk et al., Validity of the Polar H10 Sensor for Heart Rate Variability Analysis during Resting State and Incremental Exercise in Recreational Men and Women. Sensors (Basel). 2022 Aug 30;22(17):6536).

However, others have indicated it is 130 Hz.

1) Lee KFA, Chan E, Car J, Gan WS, Christopoulos G. Lowering the Sampling Rate: Heart Rate Response during Cognitive Fatigue. Biosensors (Basel). 2022 May 10;12(5):315.

Would anyone be able to confirm?

Thanks

Andrew