Scienlodic Mini Hearing Aids Small Ear Invisible Sound Amplifier ITE Hearing Aid Hearing Mechanical for DeafElderly

Product details: 1.Max sound output:110dB+5dB 2.Max sound gain:30dB+5dB 3.Frequency range:300Hz~4000Hz 4.Total harmonic wave distortion:<10% 5.Input noise:<40dB 6.Current:<3mA Instructions: 1.Clean the ear canal before use. 2.Insert the battery. 3.When using it for the first time, please turn the volume to the minimum and then slowly increase it. 4,Try and select suitable ear dome. Install the ear dome and make sure it fits snugly. 5,Insert the hearing aid into the ear canal,adjust its position in the ear canal until the soft eartip is fully deployed and fill the ear canal. Note: 1 If the earbuds cannot fill the ear canal, it may cause feedback or whistler,So repeat step 5 to reduce howling and noise. 2 Turn off or remove the battery if you don't use it. 3 Normal hearing person can not experience the real effects of hearing aids.If it is not purchased for yourself,please help the user use and adjust it. Products include: 1 * hearing aid 1 * storage box 3 * earmuffs(different sizes) 2 * Matching battery (A10) 1 * Hearing Aid Cleaning Brush 1 * Volume adjustment bracket 1*Instructions (Please make sure has read the manual before use )