Main Features:<br />High quality wireless Bluetooth hands-free heaphones make communication， and A2DP profile for stereo Bluetooth deliver superb acoustic quality<br />40mm high fidelity units provide powerful bass， smooth mid-range and treble<br />Leather ear pad for long lasting comfort<br />Folding design for travel convenience<br />Stainless steel headband for extreme durability<br />Inline microphone / remote for music and call functions<br />Rechargeable lithium battery providing up to 10 hours of playback<br />Removable audio connecting cable<br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br />    Specifications<br />General<br />	 Model  : W670BT                                                  <br />                        Color : Black                                                  <br />                        Wearing type : Headband                                                  <br />                        Function : Voice control， HiFi， Microphone， Song switching， Bluetooth， Answering phone， MP3 player                                                	<br />Specification<br />	 Connectivity : Wireless                                                  <br />                        Connecting interface : Micro USB                                                  <br />                        Application : Computer， Mobile Phone， Portable Media Player                                                  <br />                        Plug Type: Bluetooth                                                  <br />                        Cable length : No                                                  <br />                        Frequency response : 20~20KHz                                                  <br />                        Impedance : 32ohms                                                  <br />                        Sensitivity : 97dB                                                  <br />                        Talk Time: up to 10 hours                                                  <br />                        Charging time: About 2 hours                                                	<br />Extended Function <br />	 Bluetooth version: V2.1+EDR                                                  <br />                        Bluetooth distance: W/O obstacles ≤10m                                                  <br />                        Bluetooth protocol: AVRCP， A2DP                                                  <br />                        Bluetooth mode: Headset， Hands free                                                	<br />Dimension and Weight<br />	 Product weight  : 0.132 kg                                                  <br />                        Package weight  : 0.400 kg                                                  <br />                        Product size (L x W x H) : 6 x 6 x 17 cm / 2.36 x 2.36 x 6.68 inches                                                  <br />                        Package size (L x W x H) : 18.7 x 6.5 x 22.6 cm / 7.35 x 2.55 x 8.88 inches                                                	<br />Package contents<br />	 Package contents: 1 x Bluetooth Headphone， 1 x USB Charging Cable， 1 x 2.5mm - 3.5mm Audio Cable(1.3m Length)， 1 x Chinese and English Manual                                                	<br /><br /><br /><br />                                                <br />