Featuring a 30dB gain, they are suitable for users with up to 60dB hearing loss, especially for those with hearing loss in the 500Hz, 1kHz, 2kHz, or 4kHz frequency range. Personalised Settings: Easily customise your listening experience using the Cearvol app, which allows you to adjust presets, take an online hearing test, or upload your personal audiogram for a fully tailored experience.
