ITEM NAME:10W Qi Fast Charging Wireless Charger PCBA Circuit Green Coils Board 2 With K1A8 Please add this item to your watch list so that you can receive price update about it via email. Here is how: Click the Add to Watch list button under the Place.Charging power: Max 10W. Support 5w, 7.5w, 10w. Charging Efficiency: 75%. Color: Green, As the picture shows. Input Power: DC 5V 2A / DC 9V 1.5-2A. Here is how The Transmission Distance: 2-8mm.