Q9 Standard:Qi standard compliant V1.0/V1.1 Input Voltage:DC4.6-5.5V Input Current:1500-2000mA With this Qi standard wireless power charger you can charge all your Qi-enabled devices without the bother of messy cables. It is ultra-thin convenient and universal just drop and charge. Note: 1.The wireless charger can be used for all Qi-abled device. 2.Some mobiles phones must be eqquiped a Qi receiver to be charged wirelessly.(Please read the discription carefully) The new portable Qi-abled wireless charger pad can be used for QI standard receiver.For Qi-marked devicesyou just need to put them on the wireless charger padit will work welland for some other without Qi markyou need a wireless charge reciver for you phone. Features Model:Q9 Standard:Qi standard compliant V1.0/V1.1 Input Voltage:DC4.6-5.5V Input Current:1500-2000mA Output power:5W Efficienzy:72% Frequency Range:110K-205KHZ Range:6mm Operating temperature:10-45