Meters music 0V-1-B Guia Del Usuario página 9

Fig 1.0:
Prolonged exposure at high volume settings to the sound from
headphones or earphones can damage a user's hearing.
To minimise the risk of hearing impairment, a European standard
has been issued which specifies test procedures for measuring
the sound levels from the headphones and earphones of
personal music players and similar consumer equipment.
THE METER:
HEARING
SAFE
DAMAGE
85dB 91dB
94dB
97dB
55dB
110dB