Features --This power supply is DC 6V 1A. It take any input from 100V up to 240V AC, which is what comes out of your wall socket, and output 6V DC for the devices that require 6V 1A input. --Third generation smart IV chip features short circuit protection, overload protection, over voltage protection to protect your device. Specifications: Input Voltage: 100-240V AC 50/60Hz Output Voltage: 6V DC Output current: 1A Output Power: 6W Max DC Cable length: about 4.6FT / 140cm Pole of DC plug: Center Positive(+), Outside Negative (-) DC Output Plug Size: 5.5mm x 2.5mm ( Compatible with 5.5mm x 2.1mm Plug )It perfect replacement for 300mA / 500mA / 800mA as amperage isnt forced. (If your previous Adaptor was less than 1A then this will be a perfect replacement as amperage is NOT Forced). Package: 1 x DC 6V 1A Power Supply Note: 1. Please be kindly informed that the total wattage of the devices should not exceed the max wattage(6W) of this adapter(6V 1A).2. Please check the DC interface size of your appliance before purchasing. if you are not sure about the plug size you want. If you have some questions for this adapter, we will try our best to offer the solution accordingly.