Tutorial - Descent Mk3i: Apnea ∣ How to Use Mk3i While Freediving

[@joannezacarias2873]

What's wrong with my watch, doesn't have apnea alert

[@camiloa.3881]

hi guys ! thanks for the video.
it is possible to start/stop the stopwatch during the inmersion ?
for example i´d like to do a 1 minute static hang at 15mts.