Features:<br />1.CE Approval<br />2.Volume control   <br />3.ON\/OFF switch<br />4.2 different size noise prevention earplug<br />5.Fashion design, comfortable to wear and easy to use.<br />6.Loud &amp;amp; Clear sound, cheap price<br />7.Can be adjusted to fit both ear<br />8.This hearing aid is packaged in a nice retail box which is perfect for retailling<br /><br />Description:<br />Model: V-163<br />Max sound output: 130&amp;plusmn;5dB<br />Sound gain: &amp;ge;50dB<br />Total harmonic wave distortion: &amp;le;5%<br />Frequency range: 300Hz~4000Hz<br />Input noise: &amp;le;30dB<br />Voltage: D.C.1.5V<br />Current: &amp;le;4mA<br />Battery: 2 AG13 Button Batteries<br />Package Size: About 9*7*3cm<br />Package Weight: 106g<br />Color: As show in the picture<br /><br />Package Include:<br />1 x V-163 Hearing Aid<br />2 x Earplugs<br />1 x English Manual<br />2 x AG13 Batteries<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.