Main Features:<br />Roman Q3 Bluetooth V4.1 headphone<br />Bluetooth version: 4.1<br />Chip: ISSC<br />Connect with 2 phones at the same time<br />Photographed function ( sefie ): Bluetooth romote control<br />Voice prompt: Supports Chinese and English switch<br /><br />Special announcement:<br />1.Because of the some Android phones manufactory made some changes for the original Android system， it cause compatibility problems occur in some Android phones， for example， you can not use three side calls normally on Mi mobile phone.<br />2.When use photograph function， you need to get into mobile setting to the volume control for photograph， if it still can not photograph， you can download "360 camera" APP install to your mobile phone.<br /><br />Note: Parts of the headset are magnetic， metallic material may be attracted to the headset. Please do not place credit cards or other magnetic storage media near the headset， because information stored on them may be erased.<br /><br /><br /><br /><br />    Specifications<br />General<br />	 Brand: Roman                                                  <br />                        Model  : Q3                                                  <br />                        Color : Orange， Red， Black， Silver                                                  <br />                        Wearing type : In-Ear                                                  <br />                        Function : Microphone， Multi connection function， Noise Cancelling， Song switching， Bluetooth， Answering phone， Voice control， HiFi                                                	<br />Specification<br />	 Connectivity : Wireless                                                  <br />                        Connecting interface : Micro USB                                                  <br />                        Application : Computer， Mobile Phone， Portable Media Player                                                  <br />                        Core chip: ISSC                                                  <br />                        Sound channel: Two-channel (stereo)                                                  <br />                        Working voltage: 3.4 - 4.2V                                                  <br />                        Talk Time: 3.5 hours                                                  <br />                        Music Time: 3 hours                                                  <br />                        Standby time: 60 hours                                                	<br />Extended Function <br />	 FM frequency range: 2.401-2.480GHz                                                  <br />                        Bluetooth: Yes                                                  <br />                        Bluetooth version: V4.1                                                  <br />                        Bluetooth distance: W/O obstacles ≤10m                                                  <br />                        Bluetooth mode: Hands free                                                	<br />Dimension and Weight<br />	 Product weight  : 0.008 kg                                                  <br />                        Package weight  : 0.123 kg                                                  <br />                        Package size (L x W x H) : 16.8 x 6.8 x 5.1 cm / 6.60 x 2.67 x 2.00 inches                                                	<br />Package contents<br />	 Package contents: 1 x Roman Q3 Bluetooth V4.1 Headphone， 1 x USB Cable， 2 x Earbud， 1 x Chinese and English User Manual                                                	<br /><br /><br /><br />                                                                                            <br />