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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.
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Features: -Easy to use, the volume can be easily adjusted with the touch of a button, no tools required. -Built-in energy-saving rechargeable battery prolongs battery life and extends the time between charges, supporting all-day use. -The charging box can be fully charged in 2-3 hours, and after being fully charged, it can achieve an ultra-long standby time of 35-48 hours. -Each weighs only 3 grams, which is convenient and comfortable to wear. It comes with earplugs of different sizes to fit everyone's ears perfectly. -It adopts a compact and lightweight design, which satisfies your convenience of carrying and invisible wearing, and can be used anytime and anywhere. .
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Type:Hearing Aid（With Bluetooth）. Not suitable for the crowd. Rapidly progressive hearing loss. Obscure aural crowds with unexplained hearing. 1 Pair Hearing Amplifiers. Frequency range:350-4500MHz. TypeHearing Aid.
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ACCESSORIES INCLUDED: Each 4 different size of earplugs to help adjust to your ear canal for a comfortable fit. Each hearing amplifier included an extra button battery. 2x Hearing aids. It can be comfortably worn in either ear.
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Input noise: < =32dB. Working hours exceed 40 hours. Current: < =1.2mA.
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Please be noted that we stock our products in UK, and you will get your package in around 2-3 workdays, while there are some other sellers who claim to be UK stock too, but take more than a week (5-7 Days) to deliver, which are usually China stock in fact. .
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1 Pair Mini Invisible Hearing Aids In-Ear Digital Enhancer Voice Sound Amplifier 300mAh with Digital Display Charging Case. Hearing aids colour: Blue + Red. Digital display charging case for more intuitive viewing of remaining power and charging status.
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