Main Features:<br />New wireless Bluetooth handsfree stereo headphone<br />Built-in microphone for answering in coming calls<br />Adjustable for adult and kids<br />Folding for traveling and carrying easily<br />Support Micro SD card for music play<br />Works with all smartphones with Bluetooth function:   iPhone 5/4S/4/3; Samsung Galaxy S4/3; Note II 2; LG; HTC; NOKIA; HUAWEI; Motolora; Blackberry; Philips; Toshiba; Panansonic; AT&T; Sprint; Version; T-mobile<br />Work well with all Tablets with Bluetooth function:   Apple Mac; iPad; iPod series; Samsung Galaxy Tab; Kyros Tab; Nook Tablet; Playbook， Asus; Google; Coby; Microsoft， TOSHIBA， LG， PANANSONIC， SONY; VIZIO ASUS <br />All Android tablet and all other tablet with Bluetooth function<br /><br />    Specifications<br />General<br />	 Model  : NK-S550                                                  <br />                        Color : Blue， White                                                  <br />                        Wearing type : Headband                                                  <br />                        Feature: FM Radio， Microphone， Recharge Li battery， MP3                                                  <br />                        Function : Answering phone， Microphone， Song switching， FM function， Bluetooth， MP3 player， Noise Cancelling                                                	<br />Specification<br />	 Connectivity : Wireless                                                  <br />                        Connecting interface : 3.5mm， USB                                                  <br />                        Compatibility: Bluetooth enabled Smartphone， Tablet PC， Music Player                                                  <br />                        Application : Portable Media Player， Mobile Phone， Computer                                                  <br />                        Core chip: CSR                                                  <br />                        Sound channel: Two-channel (stereo)                                                  <br />                        Frequency response : 20~20KHz                                                  <br />                        Sensitivity : 105dB ± 3dB                                                  <br />                        Power supply: Built-in lithium battery                                                  <br />                        Working time: Playing time up to 8 hours; Continue talk time up to 5 hours                                                  <br />                        Charging time: About 3 hours                                                	<br />Extended Function <br />	 FM radio: Yes                                                  <br />                        FM frequency range: 87~108MHz                                                  <br />                        Bluetooth: Yes                                                  <br />                        Bluetooth version: V3.0+EDR                                                  <br />                        Bluetooth distance: W/O obstacles 10m                                                	<br />Dimension and Weight<br />	 Product weight  : 0.210 kg                                                  <br />                        Package weight  : 0.600 kg                                                  <br />                        Product size (L x W x H) : 19.0 x 17.0 x 9.0 cm/ 7.5 x 6.7 x 3.5 inches                                                  <br />                        Package size (L x W x H) : 21.0 x 19.0 x 11.0 cm                                                	<br />Package contents<br />	 Package contents: 1 x Bluetooth Headphone， 1 x Audio Cable， 1 x USB Cable                                                	<br /><br /><br /><br />                                                                                            <br />