Highlights:<br />Three of 5 electronic horn with microphone? works with any 12V car? van or truck<br />The sound compounded by the digital programs and meets the requirements of police and fire control department<br />60W speaker provides very loudly sound? it is about 300dB unit at full volume<br />4-hole mounting base? easy to Install with screws (Included)<br />Connect the red wire to the positive pole and the black wire to the negative pole<br /><br /><br /><br /><br /><br />    Specifications<br />Specifications<br />  Type: Other Decorations                                                  <br />                        Material  : Plastic                                                  <br />                        Color  : Black                                                  <br />                        Product weight   : 0.476 kg                                                  <br />                        Package weight   : 0.777 kg                                                  <br />                        Product size (L x W x H)  : 15.4 x 18 x 8.4 cm / 6.05 x 7.07 x 3.30 inches                                                  <br />                        Package size (L x W x H)  : 21 x 18 x 14 cm / 8.25 x 7.07 x 5.50 inches                                                  <br />                        Package Contents: 1 x Car Siren Horn? 1 x Accessory Package                                                 <br /><br /><br /><br />                                                <br />