Product code: Livall Road Bike Helmet BH51M good NSO URBAN-SOUND BY JBL ，Size:58-61cm
LIVALL BH51M NSO is the only helmet with Sound by JBL that delivers better sound quality for music and phone calls. Now you can enjoy incredible sound, even when outdoors. The BH51M NSO utilizes open ear speakers so you can enjoy music while maintaining situational awareness. The size of speakers increased by 57%, the sensitivity increased by 5dB, and the resonance frequency decreased by 180Hz. The sound good quality of the bass is rich and full and the mid-treble is clear.
LIVALL BH51M NSO is the only helmet with Sound by JBL that delivers better sound quality for music and phone calls. Now you can enjoy incredible sound, even when outdoors. The BH51M NSO utilizes open ear speakers so you can enjoy music while maintaining situational awareness. The size of speakers increased by 57%, the sensitivity increased by 5dB, and the resonance frequency decreased by 180Hz. The sound good quality of the bass is rich and full and the mid-treble is clear.