Features: This new model of qi wireless charger is designed with portability in mind. You can slip it in your pocket for its lightweight and handy. The small and simplicity design make sure that it fits in right at home or on your office desk without stealing a lot of real estate nor particularly looking much like a gadget. Unlike other qi chargers which can let your phone hit thrilling 50 - 60 degree celsius while charging, this charger has built-in temperature regulation chip and overcharging protection chip which ensure you have a safe and great charging experience. Regarding its function, once connected to a power outlet by a plug adapter or directly to a Micro-USB port. It only can be used with Qi standard wireless. Specifications: Frenquency: 100-200KHz Charging Distance: 4-10mm Input: DC 5V, 1500mA Thickness: 9mm Diameter: 69mm Packing size:12.5 x 12.5 x 3cm Net weight: 45g Package weight:157g Note: Check Device Compatibility before placing order This item is a Charger Transmitter, and a receiver should be used in conjunction with it for normal charging. So you should check whether your device have got a receiver before buying. If not, you have to buy an extra QI wireless receiver.