Скачать или смотреть Diving 200m underwater in bifins @ Suunto Freedive Games in Wrocław

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Measurement methodology:
HR measurements are done with Polar H10 ECG chest strap

Time between HR recording and video is synchronized by calculating an offset between the action cam internal clock and Polar session start timestamp. Polar workout start timestamp is based on the clock of the phone it’s connected to. Before each pool session, a recording of the phone’s clock is captured, which ensures a correct time offset can be applied to eliminate potential differences between action cam's internal clock and HR recording timestamps. This ensures an accuracy of +/- 1s

HR sound is artificially generated based on https://github.com/bencholmes/heartbeat

Shot on Feb 15, 2026

Diver: Bartosz

Timestamps
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00:12- start
00:52 - 50m
01:37 - 100m
02:26 - 150m
03:16 - 200m

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