Ultra Thin Design, Compact And Light Weight Without Increasing Additional Weight Works Well With Any Qi-Enabled Charger Note: Built-In Wireless Receiving Coil, It Should Be Used With Wireless Charging Transmitter, It Cannot Be Used Alone Suitable For Iphone 6 I5 5S 5C Will Not Interfere With Other Functions On Your Phone Wireless Distance: 4-7Mm Input: Dc 5V 1A Output: Dc 5V 800Ma Size: Approx. 79 X 43 X 1Mm / 3.1 X 1.69 X 0.039 Inch Power Transform Efficiency: More Than 70%