Main Features:<br />Bluetooth V4.0， stable transmission and strong signal<br />4 hours music time with high fidelity sound<br />Multipoint， connect with 2 phones at a same time<br />iOS battery status display， let you know when need to charge<br />CVC noise reduction， professional intelligent noise reduction without noisy<br />Ergonomic design， give you a comfortable wear feeling <br />Compatible with various brands of Bluetooth phones and tablet PCs and etc.<br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br />    Specifications<br />General<br />	 Brand: Roman                                                  <br />                        Model  : S330                                                  <br />                        Wearing type : In-Ear                                                  <br />                        Function : HiFi， Voice control， Answering phone， Bluetooth， Song switching， Microphone， Multi connection function， Noise Cancelling                                                	<br />Specification<br />	 Connectivity : Wireless                                                  <br />                        Connecting interface : Micro USB                                                  <br />                        Application : Sport                                                  <br />                        Core chip: CSR                                                  <br />                        Sound channel: Two-channel (stereo)                                                  <br />                        Working voltage: 3.4 - 4.2V                                                  <br />                        Talk Time: 4.5 hours                                                  <br />                        Music Time: 4 hours                                                  <br />                        Standby time: 130 hours                                                	<br />Extended Function <br />	 FM frequency range: 2.401-2.480GHz                                                  <br />                        Bluetooth: Yes                                                  <br />                        Bluetooth version: V4.0                                                  <br />                        Bluetooth distance: W/O obstacles ≤10m                                                  <br />                        Bluetooth mode: Hands free                                                	<br />Dimension and Weight<br />	 Product weight  : 0.020 kg                                                  <br />                        Package weight  : 0.14 kg                                                  <br />                        Package size (L x W x H) : 20 x 10 x 4 cm / 7.86 x 3.93 x 1.57 inches                                                	<br />Package contents<br />	 Package contents: 1 x Roman S330 Stereo Sport Bluetooth Headphone， 1 x USB Cable， 4 x Earbud，1 x English User Manual                                                	<br /><br /><br /><br />                                            <br />                                                <br />