Features 1、Low power consumption, a charge can be used for about 20 hours 2、Can control the volume of the hearing aid to help you get the best hearing. 3、Lightweight designs and comfortable to wear, suitable for both children and adults. 4、Compensation for hearing loss in patients with tracheal hearing loss. 5、Suitable for children and adults with air‑induced hearing loss, practical accessory. Specification Condition: 100% Brand New Item Type: Hearing Aid Material: Plastic + Silicone Scope of Application: Compensation for hearing loss in patients with tracheal hearing loss Applications: Suitable for children and adults with air-induced hearing loss, but children under 12 years old should be used under adult supervision Power Supply: D.C. 1.3V, with +5%, -10% relative error Working Environment: Temperature -10°C ~ +40°C, relative humidity ≤80% Storage Environment: Temperature -40°C ~ +55°C, relative humidity ≤93% Battery Type: Rechargeable nickel metal hydride battery Battery Capacity: 40mAh Contraindications: 1. Acute external otitis media, tympanitis, chronic suppurative otitis media (in the stage of abscess infection), acute suppurative otitis media are not suitable for wearing tracheal hearing aid, and the patient is allergic to this material 2. It is not suitable for patients with non-gas-conductance hearing and extremely severe hearing loss Notes: 1. Before fitting hearing aid, should pass professional examination and hearing test, and use under the guidance of doctor or professional fitting of hearing aid 2. Moistureproof, shockproof and high temperature proof. 3. Do not make the hearing aid immersed in any liquid, before swimming and shampoo should take off the hearing aid; After swimming or washing, wait for the ear canal to dry before putting on a hearing aid. 4. After taking off the hearing aid at night, should be placed in the box containing desiccant, avoid light, avoid high temperature, high humidity environment, avoid falling. 5. Should keep the hearing aid surface cleaning, often cleaning the earwax in the earplug. 6. Function and volume control switches should be used correctly. Switch on and off as lightly as possible to avoid excessive force. 7. The hearing aid should be regularly sent to the testing center for maintenance, inspection, to make sure that the hearing aid in a good state. 8. For users who wear hearing aids for the first time, if their ears are blocked or their voice is too loud (the tightness of the earplugs should be adjusted and the loudness of the volume adjusted), they will gradually get used to it within three months. 9. If not used for a long time, please turn off the hearing aid and put it into the drying box. Keep hearing aids out of reaches of children to prevent accidental ingestion or damage. 10. Rechargeable batteries and disposable batteries in abnormal use environment (high temperature, high humidity) will produce overheating, fire, explosion. 11. After using for a period of time, if voice becomes smaller, indicating that the battery is low, should be charged in time, to avoid excessive discharge of the battery. 12. When you stop using the hearing aid, please turn off the power to extend the life of the battery. Wear method: Wear the hearing aid in the back of the ear, put the earplug in the ear canal, and keep the earplug and ear canal closely match Use of earplugs: 1. Choose appropriate earplugs according to the size of the ear canal 2. Earplugs can be reused 3. Select appropriate earplugs: Users with large ear canals choose large earplugs, while users with small ear canals choose small earplugs. The machine is equipped with a variety of earplugs of different sizes (make sure that the earplugs are closely matched with the ear canals, otherwise it will cause sound feedback and lead to loud noises). 4. Earplugs should be regularly cleaned of earwax in earplugs Package List 1 x Hearing Aid 1 x Bag of Earplug 1 x Brush 1 x Drying Box 1 x Charging Cable 1 x Charging Box