3 Review(s)

Thise is hearing aid machine. Behind the ear. A sound collecting Hole, Volume Adjuster, On button, Battery Cartridge, Earphone, Ear Plug there is this machine. Open the cartridge cover, put the battery in the correct direction. Zinc Air Battery is best choice and has longer life. Before use, make sure the power is turn off, or make the volume to "1".Put the ear hook on your ear, plug in the ear plug tightly. The unite is on "off" position. And volume is on "1", otherwise the instant sound will make you uncomfortable. Turn on the power and adjuster the sound volume to get clear sound. If you hear the whistling sound. please creak whether you have plugged in the ear plug tightly. If it can't be plugged tightly. Please change the other size plug. Please maintain the products all the time, avoid ear plugs and sound collection hole being blocked by foreign objects. It will affect the effect of sound ampliffer.Please take out battery if don't use it for a long time. otherwise the components will be rotted by time. rotten liquid by battery. Hearing aids work by amplifying sound through a three-part system: The microphone receives sound and converts it into a digital signal. The amplifier increases the strength of the digital signal. The speaker produces the amplified sound into the ear. A hearing aid is a small electronic device that you wear in or behind your ear. It makes some sounds louder so that a person with hearing loss can listen, communicate, and participate more fully in daily activities. A hearing aid can help people hear more in both quiet and noisy situations.