F-13 Hearing Aid (1 x AA)
Model: F-13 - Plastic case material - Help hearing-impaired to raise the audition and hear voice and do barrier-free communication with others - Maximum saturated sound pressure level: 129dB +/-4dB - Acoustic gain: at least 38dB - Harmonic distortion: no more than 15% (f - Frequency response: 450Hz~3500Hz - Equivalent input noise level: no more than 30dB - Powered by 1 x AA battery (included) - Package includes: - 1 x Hearing aid - 1 x Earbuds adapter - 3 x Earbuds - 1 x Earphone (76cm cable length) - 1 x Chinese manual