Product Parameter 1.Implementation standard: QI standard WPC QI 2.1 2.Transmit power: Input voltage: 9-16V 3. Input power: 5V/1A 9V/1.2A 4.Operating frequency: 110KHz-205HKz 5.Charging distance: 6-8mm 6.Charging efficiency: >75% 7.Operating temperature: -20 DegreeC-+80 DegreeC 8.Applicable only to certain Audi models.