Crescendo Music 20 S/M/L [Earplugs] Musica Rara you can add the auxiliary

you can add the auxiliary blade function by using this product

rich sound and sustain that cannot be achieved with bone or synthetic materials

it's possible to keep it spinning for more than 10 minutes

it has a very well-balanced

often for cello and double bass

Crescendo Music 20 S/M/L [Earplugs] Musica Rara you can add the auxiliaryProtects you in loud environments. Designed specifically for concert halls and music lovers, the acoustic mesh filter reduces noise to safe listening levels, delivering musical audio across the entire frequency range. Music levels at concerts exceed the safe limit of 85dB, which can cause hearing damage including tinnitus and long term hearing loss. Crescendo Music 20 allows you to safely listen to music as loud as 105dB for up to 8 hours. Dynamic Ear