1) As the ear canal is not sealed, some sound can be heard by people nearby at high volume, especially in quiet places (office, library, public transport). This is normal for open-ear earbuds.

2) Lower the volume in quiet surroundings.

3) Wear the earbuds correctly so the speaker faces the ear canal – the sound goes into the ear and less volume is needed.

4) During calls in quiet places, keep the call volume moderate.