specification: _x000D_Item Type: Hearing Aid _x000D_Material: Plastic + Silicone_x000D_Scope of Application: Compensation for hearing loss in patients with tracheal hearing loss_x000D_Applications: Suitable for children and adults with air-induced hearing loss, but children under 12 years old should be used under adult supervision_x000D_Power Supply: D.C. 1.3V, with +5%, -10% relative error_x000D_Working Environment: Temperature -10C ~ +40C, relative humidity 80%_x000D_Storage Environment: Temperature -40C ~ +55C, relative humidity 93%_x000D_Battery Type: Rechargeable nickel metal hydride battery_x000D_Battery Capacity: 40mAh_x000D__x000D_Contraindications:_x000D_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_x000D_2. It is not suitable for patients with non-gas-conductance hearing and extremely severe hearing loss_x000D__x000D_Notes:_x000D_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_x000D_2. Moistureproof, shockproof and high temperature proof._x000D_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._x000D_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._x000D_5. Should keep the hearing aid surface cleaning, often cleaning the earwax in the earplug._x000D_6. Function and volume control switches should be used correctly. Switch on and off as lightly as possible to avoid excessive force._x000D_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._x000D_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._x000D_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._x000D_10. Rechargeable batteries and disposable batteries in abnormal use environment (high temperature, high humidity) will produce overheating, fire, explosion._x000D_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._x000D_12. When you stop using the hearing aid, please turn off the power to extend the life of the battery._x000D__x000D_Wear method: _x000D_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_x000D__x000D_Use of earplugs:_x000D_1. Choose appropriate earplugs according to the size of the ear canal_x000D_2. Earplugs can be reused_x000D_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)._x000D_4. Earplugs should be regularly cleaned of earwax in earplugs Features: 1Low power consumption, a charge can be used for about 20 hours 2Can control the volume of the hearing aid to help you get the best hearing. 3Lightweight designs and comfortable to wear, suitable for both children and adults. 4Compensation for hearing loss in patients with tracheal hearing loss. 5Suitable for children and adults with air?induced hearing loss, practical accessory. PackageList: 1 x Hearing Aid1 x Bag of Earplug1 x Brush1 x Drying Box1 x Charging Cable1 x Charging Box