Main Features：<br />Bluetooth version: V3.0<br />Standard: WPC - 1.0<br />Transmit Power: 5W<br />SNR: >= 80Db<br />Charging efficiency: 74%<br />Transmission distance: 0 - 10mm<br />Built-in battery: 3.7V<br />Charging voltage: 5V 1.5A<br />Charging time: 3 - 4 hours<br />Talking time: Around 6 hours<br />Loud speaker dimension: 52mm 3W x 2<br />Unobstructed effective range: >10M<br />NFC wireless induction distance: <br />    Specifications<br />General<br />  Type: Wireless Charging Transmitter                                                  <br />                        Compatibility: Universal                                                  <br />                        Model: W700                                                  <br />                        Input: DC 5V ± 0.25V / 1.5A - 2.0A                                                 <br />Specification<br />  Product weight: 0.530 kg                                                  <br />                        Package weight: 0.700 kg                                                  <br />                        Product size (L x W x H) : 17.5 x 13.0 x 7.0 cm / 6.88 x 5.11 x 2.75 inches                                                  <br />                        Package size (L x W x H): 20.7 x 15.5 x 8.5 cm / 8.14 x 6.09 x 3.34 inches                                                 <br />Package Contents<br />  Package Contents: 1 x Wireless Charging Transmitter                                                 <br /><br /><br /><br />                                                                                            <br />