SOUNDASIA C1 360 Angle Rotation Vehicle Wireless Charging Transmitter for the Qi Standard Receiver Cell Phone, Black One touch extension holding arm, Position fixing sliding arm, LED charging indicator in holding arm Input 5V/1.5A; Charging Power: Max 5W Compatible with WPC QI 1.1 spec Charging boundary: 4-6 mm; Operation frequency: 100-200Khz Wireless charging efficiency: 70%; CE/FCC/CCC/RoHS