Features
--Max sound gain:30dB,Suitable for mild to moderate hearing loss (Reference hearing loss map)
--Simple one-button operation:easy to use
--Biomimetic design:Designed for hearing impaired,more fitting ear canal.Do not feel pain even when worn for a long time.
--Long working time:One A312 battery can last about 1 days.Convenient, and practical.
--If the ear dome is not completely fill into ear canal or air leaks at the ear dome, which will causes a annoying whistle.We give 3 different sizes of earplugs to reduce howling and noise.

Specification
Max Sound Output: ≥120 dB
Max Sound Gain: ≥30 dB
Harmonic Wave Distortion: f<1000Hz≤10%,f>1000Hz≤4%
Frequency Range: 300～4000 Hz
Input Noise: ≤540 dB
Battery: AG3 Button battery     
Working Voltage: dc1.5V                     
Working Current: ≤4mA
Color: As the picture shows
Item Size: 1.9 x 1.4 x 1.6cm                      
Package Size: 8.5 x 5.5 x 3.5cm

Instructions 
1. Clean the ear canal before use.
2. Insert the battery,turn the botton to N.
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.

Package included
1 * hearing aid
1 * storage box,
3 * earmuffs(different sizes)
2 * matching battery (A312),
1 * Hearing Aid Cleaning Brush.
1 * Instructions (Please make sure has read the manual before using)