Thanks for your visiting this portable voice amplifier megaphone. This simple design has very low noise， close to the theoretical minimum. It is will meet your expectations. Beautiful in small bodily form and easy to carry make it a wonderful aid for various activities， effective avoiding of interference while being used outdoors powered by either rechargeable battery or external power. All in all， it is time to try this portable voice amplifier megaphone.                                    Features                New ang high quality<br>    This speaker system is good for use at the car， motorcycle， etc<br>    Good workmanship<br>    Loud sound and clear tone quality<br>    Easy installtion<br>    Work for iPod， CD player， MP3 / MP4 / MP5 player， etc<br>                                                            Specifications                        Maximum Power     1000W    <br>          Nominal Power     50W    <br>          Woofer Size     脦娄 163 x 237mm    <br>          Mylar Dome Tweeter Size     脦娄 28mm    <br>          Sensitivity     91dB / W (1M)    <br>          Frequency Response     35Hz~22.000Hz    <br>          Impedance     4 ohms    <br>          Material     Heat-resistant resin    <br>          Color     Balck    <br>          Dimension     26 x 18 x 10 x 9.8cm / 10.23" x 7.09" x 3.94" x 3.86" (L x W x H x D)    <br>          Weight     2674g    <br>                                                             Package Includes                1 x 1000 Watt 6x9 Inch 3-Way Coaxial Car Speaker Black<br>