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.