Sound Amplifier Hearing Aid Voice Enhancement Device In The Ear For Elderly Volume Control audifonos Like Siemens Headphone S-139 1 pcs

About this item

• Features: 1. Normal-equal amplification across all pre-programmed frequencies. 2. Noisy - reduces background noise ( restaurant , wind & road noise ). 3. Outdoor-decreases overall sound gain , more comfortable. 4. Meeting - increases voice frequency , decrease base and high frequency sound. Technical Parameters: * Max Out :126 ± 4dB * Max Gain :47 ± 5dB * Harmonic Dist:≤ 5% * Frequency Range :300Hz ~ 4000Hz * Equivalent Input Noise :≤ 32 dB * Standard Battery:A13 Battery * Voltage :1.5V * Current :≤ 3.5 mA Packing list: Principal machine * 1 Earplugs * 3 Cleaning sweeper * 1 Warranty card * 1 User manual in English * 1 Battery* 1 Note: - Adjust volume to the minimum before wearing. - Choose an earplug of slightly bigger size to avoid whistler. - Increase volume gradually to avoid sudden increase in sound. -If you hear a howling,check the ear (silica gel) is appropriate and whether the size of plug is tight, the appropriate choice of earplugs and plugged, make sure no air leakage. - Please regularly clean the ear plugs or ear molds in order to ensure the normal use of hearing aids. - Use for long periods of time, please remove the batteries to prevent battery rot erosion hearing aid components.