Qi Wireless Charger Charging Pad + Receiver Kit for Samsung Galaxy S4 Note Black Samsung Galaxy S4 This product is compatible with Wireless charging protocol of Qi(V1.0&V1.1)WPC. Can be fit for Qi standard receiving equipment(within 5W) rechargeable,easy and fast. Input voltage: DC 4.6-5.5V Inputcurrent: 1000-2000mA Driven load: ?5W (It is not fit for Tablet computer to charge) Charging efficiency: ?75% Operating temperature: 0?-45? Humidity range: 45-85%RH Charging frequency: 100-200KHz Power distance: 5mm Dimension: 155 x 84 x 9 mm Light status: 1.Red led: standby; 2.Green(Blue) led: charging; 3.flashing: voltage/current/temperature anomalies Package includes: 1 Wireless Charging Pad 1 Micro USB Cable 1 Compatible Qi Receiver (please choose model) 1 Users Manual