Main Features:<br />With Bluetooth 3.0 + EDR， it can be linked with intercom<br />It can be used for 3 persons to intercom with each other， and then talk with only one at one time<br />With DPS noise elimination processing and voice prompt， offers you high quality conversation during motorcycling<br />The earphone comes with signal gain antenna， you can listen to the call or music more clearly<br />Automatically answer the calls， and comes with voice prompt， convenient to use<br />Cellphone talk time: About 9 hours<br />Charging time: About 2.5 hours<br />Standby time: About 10 days<br /><br />    Specifications<br />General<br />  Intercom Distance : 1km                                                  <br />                        Operating Temperature: -10 Degree Centigrade - 55 Degree Centigrade                                                  <br />                        Power Supply: 500mAh Lithium Polymer Battery                                                 <br />Weight / Dimension<br />  Product Weight: 0.434 kg                                                  <br />                        Package Weight: 0.654 kg                                                  <br />                        Package Dimension: 21 x 16.6 x 5.5 cm / 8.25 x 6.52 x 2.16 inches                                                 <br />Package<br />  Package Contents: 2 x Intercom ( Built-in 500mAh Lithium Polymer Battery )， 2 x Earphone， 2 x Fixed Base， 2 x USB Charging Line， 1 x English Instruction Book                                                 <br /><br /><br /><br />                                            <br /><br /><br /><br />                                                <br />