A whistle (shrill sound) is a sign of wearing hearing aids incorrectly. If the hearing aid and ear canal do not match, the sound from the receiver will be picked up by the microphone again, forming a loop that will be continuously amplified and produce a whistling sound.
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Which is simple and clear and very suitable for the seniors. These hearing aids are ideal for mild to moderate hearing loss and are an excellent solution for those seeking clear hearing and comfort.
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Equivalent Input Noise (dB):25dB. Device SizeIn the Ear (ITE). Frequency range(Hz):300-3500Hz. Sound ProcessingDigital. 1X Charging Case. Peak OSPL 90(dB SPL):117dB. Peak Gain(dB):32dB.
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Which is simple and clear and very suitable for the seniors. These hearing aids are ideal for mild to moderate hearing loss and are an excellent solution for those seeking clear hearing and comfort.
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Tra le foto allegate potrete trovare la fattura in originale. Vendo coppia di protesi acustiche complete di accessori.
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Hearing aid charging current: ≦30mA. 2 x Hearing aids (left and right a set). Reference Test Gain: 30dB ±5dB. Equivalent input noise level: ≦ 29dB. Charging case working current: ≦70mA. High frequency average OSPL90: 113dB±4dB.
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