This is a pair of wireless charging kit including transmitter and receiver. The transmitter is a build-in wireless charging module of mobile phone wireless charger, it fits wireless charging standard set by the WPC, compatible with most wireless charging mobile devices on market such as LG Nexus 4/5, Lumia920. High output current capability up to 1A at 5V. The receiver consists of a FPCB and a sticking antenna, it features only 1.2mm thick. It have been used as wireless charging case for mobile phone. Features: Qi-marked Product, Fit wireless Charging Standard Set by The WPC 3C and Qi Wireless Charging Standard Qualified Light Indicator to Show The Status of charging High Power Transform Efficiency Specification： TX Input Voltage: DC 5V TX Input Current: 1 - 2A TX Output Voltage: DC 5V TX Output Current: Max.1A TX PCBA Dimensions: 55 x 35 x 3.5mm TX Coil Dimensions: 43(diameter) x 2.2mm TX Magnetic Sheet: 55(diameter) x 1mm RX Output: DC 5V RX Output Current: Max.600mA RX FPCB Dimensions: 36 x 12 x 1.2mm RX Antenna Dimensions: 46 x 36 x 1mm Charging Distance: 2 - 6mm Working Frequency: