2017 New Best Sound Amplifier Adjustable Tone In Ear Hearing Aids Aid for the elderly hearing device digital
2017 New Best Sound Amplifier Adjustable Tone In Ear Hearing Aids Aid for the elderly hearing device digital

2017 New Best Sound Amplifier Adjustable Tone In Ear Hearing Aids Aid for the elderly hearing device digital

$21.64

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Item Type: Ear Care
Brand Name: U-Kiss
Size: 7.0 x 4.0 x 2.0 cm (L X W X T)
Material: Plastic
Model Number: Sound Amplifie
Max Saturated Sound Pressure: 130dB+5dB
Sound gain: ≥ 50db
Harmonic Wave Distortion: ≤ 5%
Frequency response Range: 300--- 4000 Hz
Input Noise: ≤ 30 dB
Power Voltage: 1.5 V
Working Current: ≤4mA
Battery Type: :1 x AA battery (NOT included)