Invisible OTC Hearing Aids 35dB Gain Digital Sound Amplifier
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Shenzhen Sounds Good Technologies Co.,Ltd
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OTC Invisible Rechargeable Hearing Aids 24 Hours Use With Charging Case
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OTC Invisible Rechargeable Hearing Aids 24 hours use With Charging Case Specification Of Digital invisible Hearing Aid K19 Rechargeable hearing aids digital ear canal Maximum output (dB SPL):115 Frequency range (Hz):250-5500 Average output (dB SPL):105 Harmonic distortion: 500Hz: 2% Full gear gain (dB):40 Harmonic distortion: 800Hz: 2% Average gain......
Retone shenzhen Technology Co., Ltd.
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Rechargeable Invisible Hearing Aids For Elderly 400Hz -3500 Hz
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Features Charging easy and convenience . Large capacity , warking time is 12 - 18 h light weight . just 5 g Simple operation , one key switch Specification Package Size : 148*104* 390mm Net Weigh t: 5g Gross weight : 175g Total harmonic distortion ≤ 10% ......
chongqing pharmaceutical (hunan) pharmaceutical Co., Ltd
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