Feedback / Chirping:
If you hear a high-pitched sound when you put the device
in the ear canal, you’re having feedback. Change between
dierent dome sizes to one that ts better, and insert the
device as swiftly as possible to avoid feedback.
Battery doesn’t last:
Make sure you’re turning o your device when you’re not
using it, and remember to NEVER charge it for more than 4
hours, as it can cause damage. The only time in which you
should charge your device for 7´hours is the rst time you
charge it - before actually using it.