Accurate and easy to use behind the ear hearing aid<br />Durable plastic material, soft and comfortable to wear<br />Clear sound quality, low distortion<br /><br />Color: brown<br />Material: ABS<br />Package size: about 9.5 x 7 x 3.5 cm<br />Earphone diameter: about 16 mm<br />Basic parameters:<br />Maximum acoustic output: 130 db ± 5 db<br />Gain: ≥ 30dB<br />Harmonic distortion: ≤ 3%<br />Frequency range: 300~4000 Hz<br />Input noise: ≤ 30dB<br />Battery: AG3 battery<br />Working voltage: DC1.5V <br />Working current: ≤ 3mA<br />N-H control key: Yes<br />Work environment:<br />Relative temperature: -5°C ~ 40°C<br />Relative humidity: ≤ 80%<br />Atmospheric pressure: 86kPa-106kPa<br /><br /><br />Disclaimer:<br />"The sale of this item may be subject to regulation by the U.S. Food and Drug Administration and state and local regulatory agencies. If so, do not bid on this item unless you are an unauthorized purchaser. If the item is subject to FDA regulation, I will verify your status as an authorized purchaser of this item before shipping of the item."<br /><br />1 x Hearing aid<br />1 x Accessory bag (4pcs accessories)<br />2 x Battery<br />1 x English user manual<br />1 x Box<br />Packed in carton<br /><img src="http://img6.eachbuyer.com/x9/p100/hb752_1.jpg" / noproxy>                                                        <img src="http://img6.eachbuyer.com/x9/p100/hb752_2.jpg" / noproxy>                                                        <img src="http://img6.eachbuyer.com/x9/p100/hb752_3.jpg" / noproxy>                                                        <img src="http://img6.eachbuyer.com/x9/p100/hb752_4.jpg" / noproxy>                                                        <img src="http://img6.eachbuyer.com/x9/p100/hb752_5.jpg" / noproxy>