Main Features:<br />Support TF card extension up to 32GB<br />Transmission distance is up to 20m (open space)<br />3.5mm audio jack provides a simple wired connection of a variety of devices<br />Allows you to answer or reject phone calls anytime and anywhere<br />With rechargeable battery， it is convenient and practical to charge via USB<br />Playing music time is up to 10 hours， and continue talk time up to about 12 hours， standby time up to more than 180 hours<br />Best choice for listening music， watching movie， chatting online etc.<br /><br />    Specifications<br />General<br />	 Model  : NK-S650                                                  <br />                        Color : White， Red， Gold， Gray                                                  <br />                        Wearing type : Headband                                                  <br />                        Feature: Foldable， Digital Screen， FM Radio， Stereo， Audio Cable with Microphone                                                  <br />                        Function : MP3 player， Bluetooth， FM function， HiFi， Song switching， Microphone， Voice control， Answering phone                                                	<br />Specification<br />	 Connectivity : Wireless                                                  <br />                        Connecting interface : Micro USB， 3.5mm                                                  <br />                        Application : Portable Media Player， Mobile Phone， Computer                                                  <br />                        Sound channel: Two-channel (stereo)                                                  <br />                        Impedance : 32ohms                                                  <br />                        Sensitivity : 105 ± 3 dB                                                  <br />                        Microphone sensitivity: -58±3dB                                                  <br />                        Working time: Talk time: About 12 hours; Music time: More Than 10 hours                                                  <br />                        Standby time: Up to 180 hours                                                  <br />                        Charging time: 2 - 3 hours                                                	<br />Extended Function <br />	 FM radio: Yes                                                  <br />                        FM frequency range: 87~108MHz                                                  <br />                        Bluetooth: Yes                                                  <br />                        Bluetooth version: V3.0                                                  <br />                        Bluetooth mode: Headset                                                  <br />                        External memory: TF card                                                  <br />                        Max. of External memory: 32GB                                                	<br />Dimension and Weight<br />	 Product weight  : 0.175 kg                                                  <br />                        Package weight  : 0.492 kg                                                  <br />                        Product size (L x W x H) : 16.5 x 19 x 6.5 cm / 6.5 x 7.48 x 2.56 inches                                                  <br />                        Package size (L x W x H) : 21 x 16.5 x 9.5 cm                                                	<br />Package contents<br />	 Package contents: 1 x Headphone， 1 x Audio Cable， 1 x USB Cable， 1 x User Manual                                                	<br /><br /><br /><br />                                                                                            <br />