Sound gain:>30dB ± 5dB. Frequency range: 500-5000Hz. Product Material: ABS. Product color: Black.
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Our Shipping conditions: Attention: The goods will be shipped from UK Delivery time: 2 to 4 working days Support 60 days return policy Reply within 24 hours Package Included: 1x Charging case 2x Hearing aids 1x Instruction manual 2x Charging cables 2x Cleaning brushes 4x Pairs of spare earplugs 1x Color box Features: .
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The cause of howling/noise: To make a small size hearing aid, the internal amplifier and the microphone are close to each other. The sound is continuously received and extended, so it has a certain possibility of producing howling after power-on.
eBay
The cause of howling/noise: The internal amplifier and the microphone are close to each other of the hearing aid, and the sound is continuously received and expanded, so it has a certain possibility of produce howling after power-on.
eBay
Digital Rechargeable Hearing Aid Adjustable Sound Voice Amplifier Behind Ear UK.
eBay
Input noise: < =32dB. Current: < =1.2mA. Maximum output power: 129+/- 3dB.
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Features: -Built-in rechargeable battery frees you from the constraints of traditional cables and meets the needs of mobile scenarios. -Equipped with professional noise reduction technology, it can effectively filter out noise or interference signals in the environment, amplify the sound more clearly, and enhance the user experience. -It adopts a simple invisible design, is compact and easy to carry without taking up too much space. -Suitable for daily use, outdoor activities, specific work scenarios, etc. Specifications: Charging case battery: 400mAh Earphone battery: 35mAh Color: skin-colored Material: plastic .
eBay
The cause of howling/noise: The internal amplifier and the microphone are close to each other of the hearing aid, and the sound is continuously received and expanded, so it has a certain possibility of produce howling after power-on.
eBay