Input Voltage: AC 120V 100-240V 50/60Hz (Wide voltage input, suitable for various use conditions) Output Voltage: DC 4.5V±0.5V Output Current: 1A 1000mA.(In order to ensure sufficient power output, compensate for the power loss caused by the circuit resistance, the output voltage = rated voltage +0.6V or so DC Plug Dimension: 3.5 x1.35mm.Need special attention:Be sure to confirm the DC interface size of your equipment before buying, the wrong size will not be able to output. DC plug output wire length 1.5 meters / 4.9 ft. [ Promotional packaging, a package contains two adapters. One for use, the other one for backup.] IMPORTANT NOTE Please make sure that the adapted DC interface 3.5 x 1.35mm matches the interface of your device. If the two do not match, it will not work. [this adapter DC interface specification: 3.5 x1.35mm, + inside, - outside]