Used for approximately one year. Power-on confirmed. I have five other panel heaters for sale. If you purchase multiple items, I will discount the shipping cost by 750 yen per item. For example, 2 items → 750 yen off, 3 items → 1500 yen off. Packaging may not always include a box. The items will be packaged in the following order: plastic wrap → bubble wrap → cardboard reinforcement. Will ship within 24 hours.