Sell F138 Rechargeable Digital Hearing Aid Ear Severe Loss Invisible Sound Amplifier High-Power Hearing best price

Features:1. Lightweight and Comfortable: Equipped with the latest upgraded chip, Ultra-Low Itself Background Noise, and Ultralight Weight Body You Don't Even Feel Wearing It2. Avoid Squealing Noise: Before wearing a hearing aid, please turn down the volume to the lowest. When wearing, make sure that the earplugs fit tightly with the ear canal, otherwise it will cause interference and howling. Then slowly increase the volume as needed until you can clearly hear outside sounds.3. Good Gift for elder: Good package and easy to use, If your elder are having soecific instances of difficulty of hearing, this is a practical, efficient, cost effective hearing device.Descriptions:High-Sensitive Microphone. Loud Volume Amplifier Outside. Silicone Sound noise Insulation Earplug.Specifications:Material: PlasticMax Sound Output: 129dB ± 4dBMax Sound Gain: 50dB ± 5dBHarmonic Wave Distortion: ≤5%Frequency Range: 450~3500 hzInput Noise: ≤30 dBPackage Included:1 x Hearing Aids3 x Earcaps1 x User ManualNotes:1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from real object.