Ozone DUALFX Guía Rápida página 13

EARPLUG SELECTION
Bullet silicone case
The suitability of the earplugs will affect the sound quality. If it is
correctly worn, you can better isolate the outside interfering noise,
strengthen bass response, acquire better tonal balance, and allow
the earphones to better fit into your ears. Meanwhile, correct
wearing will also make you feel more comfortable. As everyone's ear
shape is different, Ozone offers several differently sized earplugs.
Trial and error are required to obtain the earplugs that can perfectly
match your ear shape. We recommend you try the smallest earplugs
first, and then try the bigger earplugs, until you find the earplugs
that fit and are kept in the ear in a not-easy-to-fall and comfortable
manner.