Main Features:<br />Support SD card? enjoy your favorite music<br />Support USB flash disk<br />Plug it into cigarette lighter of your car<br />Voltage: 12 - 24V<br />Frequency response: 20Hz - 15KHz<br /><br />    Specifications<br />Specification<br />	 Model  : BT-308                                                  <br />                        Bluetooth version: V2.1 + EDR                                                  <br />                        Operation distance: 10M                                                  <br />                        Features: Durable? Portable                                                  <br />                        Color  : Black                                                	<br />Dimension and Weight<br />	 Product weight   : 0.037 kg                                                  <br />                        Package weight   : 0.150 kg                                                  <br />                        Product size (L x W x H)  : 11 x 6 x 6 cm / 4.3 x 2.3 x 2.3 inches                                                  <br />                        Package size (L x W x H)  : 21 x 11 x 6 cm                                                	<br />Package contents<br />	 Package contents: 1 x Bluetooth MP3 Modulator? 1 x Audio Cable? 1 x User Manual                                                	<br /><br /><br /><br />                                                <br />