Description: 【Premium Material】The voltage transformer converter is made of metal materials, which is reliable, sturdy and can be used for a long time. 【Two Modes】Power Converter, two voltage modes can be switched at will. When the button is turned to this I position, it means switching to 110V to 220V, and when the button is turned to the "II" position, it means switching to 220V to 110V 【Features】Step Up/Down Transformer Converter, double voltage display, multipurpose, accurate voltage, low noise, simple operation. 【6 Layer Protection】The voltage transformer has over temperature protection, over voltage protection, under voltage protection, over current protection, short circuit protection, and fuse protection functions 【Voltage Monitor】The voltage converter transformer has a voltage detection display that can monitor the voltage in real time Specification: Material: Metal Package Includes: 1x voltage transformer converter (US Adapter) 1x instruction manual Note: Please allow slightly errors 1-2cm differences due to manual measurement.