K-88 is a mini size rechargeable hearing aid with lightweight and can be used in either ear，inside built in high capacity NI-MH battery， it only take 3~4hours to charge，and it can work for about 30hours after fully charge.<br /><br />package included<br />1 x Hearing aid<br />4 x Ear plugs(Different size)<br />1 x String<br />1 x Box<br />1 x Charger(US plug）<br />1 x User manual<br /><br /><br />Features <br /> 1. Lightweight personal sound amplifier maximizes the natural ability to  hear sounds<br /> 2. Designed to fit either ear<br /> 3. Product comes with rechargeable function， no need to replace the batteries.<br /> 4.Loudly & Clearly  <br /><br />Description <br />1.Model:K-88	 <br />2.Max Sound Output:	110÷5dB<br />3.Max Sound Gain:	◎30 dB<br />4.Harmonic Wave Distortion:	●10%<br />5.Frequency Range:	300~4000 Hz<br />6.Input Noise:	●40 dB<br />7.Battery:	NI-MH battery<br />8.Working Voltage：DC 1.5V<br />9.Working Current:	●4mA<br />10.Measurement:	22*19*15mm<br /><br />Note:<br />Dear customer， please read the instructions carefully before using.<br />We will region according to the customer， select the appropriate charger， you can also give us a message