Note: 1. It is forbidden to use for patients with otitis media or ear abscess._x000D_2. Do not use at high volume for a long time. Otherwise it will hurt your ears. If you feel unwell, stop using it._x000D_3. Please take care of the product at any time to prevent the earplugs and the radio hole from being blocked by foreign objects. This will affect the effect of the amplifier._x000D_4. Avoid electric shock and dropping the product. Do not store or use in a humid, high temperature environment._x000D_5. Do not use this product in an explosive and dangerous environment._x000D_6. Don't leave this thing to children. It can cause harm to children or others, and parts of itself may be damaged._x000D_7. Please often use a small brush to clean the earwax and oil stains on the hearing aids. If not used for a long time, take them out and charge them once a month. specification: Item Type: Hearing Aid_x000D_Material: ABS_x000D_Power Supply Mode: Lithium battery (Included)_x000D_Battery Capacity: 60mAh_x000D_Saturated Sound Pressure Level OSPL90: 130_x000D_High Frequency Average OSPL90: 108_x000D_Full Range Sound Gain 1600HZ: 35_x000D_Frequency Response Range: 200-3800_x000D_Input Noise Level: 32_x000D_Total Harmonic Distortion: 8%_x000D_Charging Time: Charging time is 1 hour, can be used continuously for 13-18 hours, standby 5-7 days_x000D__x000D_Instructions: _x000D_1. Turn on the power switch_x000D_2. Put the volume on level 1 or level 2_x000D_3. Choose the right earplugs_x000D_4. Adjust the volume to the right_x000D_5. Hang the ears of the fuselage or use both ears for plugging in_x000D_6. The sound becomes smaller, turn off the power, remove the charge_x000D_Suitable For The Crowd: Suitable for people with mild and moderate hearing loss, suitable for people with severe intermediate frequency and high frequency loss_x000D__x000D_Not Suitable for People: _x000D_1. Calculated based on the average audio frequency loss of pure tone audiograms, those with a threshold of 0-30dB do not need to use hearing aids._x000D_2. Sudden deafness, especially in patients who occur within three months._x000D_3. Tinnitus, unilateral or bilateral._x000D_4. People with rapidly progressive hearing loss._x000D_5. People with unexplained binaural hearing asymmetry._x000D_6. Patients with severe otitis externa and otitis media with continuous pus discharge and complete closure of both external auditory canals. Features: 1It is comfortable to wear without discomfort, even if it is worn for a long time, there will be no discomfort. 2The operation is simple, one key switch, one key volume adjustment, the elderly can easily get started. 3The soft ear hook design pays more attention to safety factors while ensuring comfortable wearing. 4Fashion streamline design, clear sound, don't worry about not being heard, specially designed for the elderly. 5With compact shape, easy to carry, does not occupy space, and is highly hidden. PackageList: 2 x Hearing Aid 4 x Earplugs 1 x Storage Box 1 x Plug 1 x Ear Hook 1 x Brush 1 x Adapter 1 x English Manual