QI Standard Wireless Charger Receiver Back Cover Case For iPhone 4 4s

Model:iphone 4/4s receiver ; Input Voltage (V):5; Output Voltage (V):5; Output Current (mA):0.7; Dimensions(cm):127 X 62 X 13mm; Weight (kg):0.116; Features:Wireless Charger,Battery Cases For iPhone; Compatible With:Apple 30-pin