Features:
• 100% brand new sound amplifier in the ear
• Super mini size and light weight, not easily to be seen
• 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

Description:
1. Peak Gain (dB):  117dB, suitable for moderate to severe hearing loss (refer to the Hearing Loss Chart)
2. Rechargeable case charging:  Your hearing aids can be charged using the detachable charging case. (You'll need to charge the detachable charging case first.)  It's portable, and it saves you the hassle of constantly buying a coin cell battery.
3. Charging time:  charging for 4-6 hours, it can work for 20 hours, the indicator light is red when charging. Turns off when fully charged. (For removable charging case)
4. Especially designed for the hearing-impaired, more fitting to the ear canal. No pain even when worn for a long time.
5. If the earmuffs are not fully inserted into the ear canal or air leaks from the earmuffs, it will cause an annoying whistle. We offer 3 different sizes of ear tips to reduce whistling and noise.

Specifications:
-100% Brand new and high quality
-Name:  Hearing Device
-Material:  ABS+silicone
-Product Type: Rechargeable TWS Analog
-Peak OSPL 90 ( dB SPL):  117dB
-HAF  OSPL 90 ( dB SPL):  110dB
-Peak  Gain(dB) :  32dB
-HAF/FOG Gain (dB) :  29dB
-Frequency range(Hz) :  300-3500Hz
-Distortion :
500Hz: 3%
800Hz: 3%
1600Hz: 3%
-Equivalent Input Noise  (dB):  25dB
-Voltage:  D.C.3.7V
-Current:  ≤1.5mA
-Charging Time(H): 4~6h
-Working Time(H): 20h
-Battery:  Built-in Lithium Battery
-Current:  1.5mA
-Battery Capacity(Charging Case): 300mAH
-Battery Capacity(Earbud/pc): 50mAH
-Dual Ear Usage: YES
-Fitting Range: From Mild to Moderate (between 26-55dB hearing loss)

Packing List:
Hearing Device*2
Bolt driver*2
Brush*2
Domes*6 sets
Charging Cable*1
User Manual*1
Power Box*1

Tips:
1. Clean the ear canal before use.
2. If you are not using your hearing aids, turn them off.
3. Please use the original charging cable for charging. Otherwise, the product may be damaged.

Tips for buyers:
Causes of whistling/noise:  In order to make a small hearing aid, the internal amplifier and microphone are placed close to each other.     The sound is continuously received and expanded, so there is a certain possibility of whistling after power-on.     At present, small hearing aids and high-power hearing aids on the market are difficult to avoid whistling, and only fully functional digital hearing aids can avoid whistling.

Ways to avoid whistling/noise:
1. When the power is large (the amplified sound is large), it is more likely to produce howling. Therefore, gradually increasing the bass volume can effectively prevent howling.
2. When the ear canal is completely closed, there is no whistling sound. So after cleaning the ear canal, put on the hearing aid, test the earplugs from large to small, find the most suitable earplugs, and ensure that there is no air leakage.
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, then release it to fully extend the earphone.
4. In the shutdown state,turn the volume of the hearing aid to the lowest level, then insert it into the ear. Make sure that the earbud completely fills the ear. Then turn on the power button and slowly increase the volume to a suitable volume.
5. Users who have not heard the sound for a long time may cause hearing loss due to the long-term failure to hear the sound, resulting in the hearing aid still unable to hear the sound. Please persevere, continue to stimulate the growth of the hearing nerve, and you will hear after a while. If you are not sure whether your hearing aid is working properly, you can try the product on a person with normal hearing.
6. Please pay attention to cleaning the ear canal and keep the earplugs clean.