K-83 MINI In Ear Hearing Aid Sound Amplifier Voise Enhancement Volume Adjustable<br /><br />Convenient for watching movie, enjoying the drama, attending meeting,and having class, it could help you hear the sound clearly and loudly.<br /><br />Features :<br />1, CE Approval<br />2, Volume Control   <br />3. Pocket design for portability<br />4. Super mini size and light weight<br />5. Reduce noice, provides good sound quality<br />6. Durable and reliable for long time use<br />7. Silicone earplugs in 3 sizes, fit most ears  <br />8. Adjust volume to the minimum before wearing<br />9. Increase volume gradually to avoid sudden increase in sound<br />10. This hearing aid is packaged in a nice retail box which is perfect for retailling<br /><br />Description:<br />Model: K-83<br />Max Sound Output: 110&amp;plusmn;5dB<br />Max Sound Gain: &amp;ge;30 dB<br />Harmonic Wave Distortion: &amp;le;10%<br />Frequency Range: 300~4000 Hz<br />Input Noise: &amp;le;40 dB            <br />Working Voltage: D.C.1.5V                       <br />Working Current: &amp;le;4mA   <br />Battery: 4 AG3 Button battery         <br />Color: As the picture shows<br />Hearing Aid Size: About 2.3 x 1.3 x 1.9cm  <br />Package Size: About 9.6 x 8.2 x 3.4cm  <br />Package Weight: About 70g<br /> <br />Package Included:<br />1 x K-83 Hearing aid  <br />3 x Earplugs (different sizes)<br />4 x AG3 Button battery  <br />1 x English Manual<br /> <br />NOTE:<br />1, If you hear the whistling sound, please make sure if you put the earplug tightly, or if you use a appropriate size earplug.<br />2, Please take out the battery or turn off the hearing aid when you stop to use it.<br />3, This product is not waterproof.<br />4, If water enter the sound amplifier, remove the battery and place the sound amplifier in a warm place to dry.<br />5, Sound Amplifier is not a hearing aid for those with impaired hearing. If you have impaired hearing, please consult your doctor.