The power supply and operation have not been tested because there is no dedicated cable for this product. There are no missing or damaged buttons or knobs. There is some color baldness on the buttons due to use. No abnormalities were found in the operation.Cleaning is only a simple cleaning. Please note that there may be dust and dirt inside. We have not checked the detailed functions. Thank you for your understanding. This item is in the category "Consumer Electronics\Radio Communication\Ham, Amateur Radio\Ham Radio Transceivers". The seller is "peace_world_shop" and is located in this country: JP. This item can be shipped worldwide.