Feature
1. Peak Gain(dB): 57dB, Suitable for mild to moderate severe hearing loss (Reference hearing loss map)
2. Mini-size hearing aid is a powerful unit with noise reduction feature, perfect for those who want precise sound amplification, it is so small that others will hardly notice.
3. Light and comfortable: device is extremely light, it can be comfortably worn in either ear. With the spring like connection, it can fit in all sizes of ears.
4.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.
8. Gift bundled: We will give a hearing aid box to carry.Every set contains matching , earbuds and cleaning brush.Will be great gifts for your friends or families.

Specification:
-100% Brand new and high quality
-Product Name: Hearing Aid
-Color: Blue(left)/Red(right)
-Weight: total about 115g
-Max sound out put:118+/- 4dB  
-Sound gain:>= 32dB+/- 5dB
-Total harmonic wave distortion:<= 5%  
-Frequency range:300-3800MHz  
-Input Noise:<=30dB  
-Voltage:d.c.1.2V  
-Current:<=2mA
-Full charging with 4~6 hours
-Working time about 30 hours

Pack included:
2 × Hearing aid
1 × Storage box
6 × Earmuffs(different sizes)
1 × Hearing Aid Cleaning Brush
1 × USB Charge cable
1 × Instructions (Please make sure has read the manual before using).

Tips for buyers:
The cause of howling/noise: In order to make a mini size hearing aid, the internal amplifier and the microphone are close to each other. The sound is continuously received and expanded, so it has a certain possibility of produce howling after power-on. At present, small hearing aids and high-power hearing aids on the market can hardly avoid howling, and only full-digital hearing aids can avoid howling.

Ways to avoid howling/noise:
1. When the power is high (the amplified sound is large), howling is more likely to occur. Therefore, gradually increasing the volume from low can effectively avoid howling.
2. When the ear canal is completely sealed, there is no howling sound. Therefore, please use hearing aids after cleaning your ear canal, and test the earplugs from large to small to find the most suitable earplugs.
3. After the hearing aid enters the ear canal, it is recommended to push the hearing aid with your fingers and hold it for 1-2 seconds, and then release it to fully extend the earplug.

In addition: If you do not know how to use it or there is a problem with your hearing aid, please do not rush to leave a negative review and contact us. Thank you.