Brand Name:unbranded
<br />Model Number:5200423
<br />Material:plastic
<br />Item Type:Ear Care
<br />Hearing Aid
<br />Condition: New
<br />Material: Plastic
<br />Specifications:
<br />Max sound output: 130±5dB
<br />Sound gain: 50dB
<br />Total Harmonic Wave Distortion: 5%
<br />Frequency range: 300-4000Hz
<br />Input noise: 30dB
<br />Voltage: d.c. 1.5V
<br />Current: 4mA
<br />When you see the film, watch the play, have meeting, or have classes, this product can help you to hear the sound clearly and loudly
<br />Made of durable soft plastic material that comfortable