Main Features:<br />40mm HD driver unit provides clear sound quality， offers the natural and true sound<br />Built-in Microphone<br />Supports hands-free talking， enhance the driving safety<br />Adjustable and comfortable headband. Perfectly fits your ears<br />Ear-cover design， noise cancellation<br />Built-in 250mAh battery<br />Support extended TF card<br />With FM function<br /><br /><br />    Specifications<br />General<br />	 Model: H-666                                                  <br />                        Color: Red，Blue，Black，White                                                  <br />                        Wearing type : Headband                                                  <br />                        Function: Microphone，FM function，Answering Phone，Song Switching，Voice control，Bluetooth                                                	<br />Product Details<br />	 Connectivity : Wireless                                                  <br />                        Connecting interface : Micro USB，TF card，3.5mm                                                  <br />                        Application: Mobile phone，Computer                                                  <br />                        Driver unit: 40mm                                                  <br />                        Frequency response : 20~20KHz                                                  <br />                        Impedance : 32ohms                                                  <br />                        Sensitivity : 112dB                                                  <br />                        Power Supply: 250mAh                                                  <br />                        Music Time: 12h                                                	<br />Extended Function <br />	 FM radio: Yes                                                  <br />                        FM frequency range: 87~108MHz                                                  <br />                        Bluetooth: Yes                                                  <br />                        Bluetooth version: V4.1                                                  <br />                        Bluetooth mode: Hands free，Headset                                                  <br />                        External memory: TF card                                                	<br />Dimension and Weight<br />	 Product weight: 0.220 kg                                                  <br />                        Package weight: 0.452 kg                                                  <br />                        Product size (L x W x H): 17.500 x 8.000 x 18.500 cm / 6.890 x 3.150 x 7.283 inches                                                  <br />                        Package size (L x W x H): 17.200 x 9.000 x 20.100 cm / 6.772 x 3.543 x 7.913 inches                                                	<br />Package Contents<br />	 Package Contents: 1 x Bluetooth Headphones， 1 x Charging Cable， 1 x Audio Cable                                                	<br /><br /><br /><br />                                            <br /><br /><br /><br /><br /><br /><br />                                                <br />