Main Features:<br />When there is a phone call， answering the phone automatically after 5 seconds<br />When on the phone， you can press the power button， refuse to answer<br /><br />    Specifications<br />Specification<br />	 Product weight   : 0.030 kg                                                  <br />                        Package weight   : 0.1 kg                                                  <br />                        Product size (L x W x H)  : 23 x 4.5 x 1.3 cm / 9.04 x 1.77 x 0.51 inches                                                  <br />                        Package size (L x W x H)  : 28.5 x 9 x 4 cm / 11.20 x 3.54 x 1.57 inches                                                  <br />                        Package Contents: 1 x Helmet Bluetooth Microphone， 1 x USB Cable                                                	<br /><br /><br /><br />                                                                                            <br />