Great value! The product has overall discoloration. (The product is white, but it has slightly yellowed. This is likely due to sun exposure or oxidation from ozone.) Also, the filter shows some signs of use. There are multiple photos, please check them. If necessary, I will take photos of any areas of concern. This is a used item, so please understand that it is sold "as is" with no returns. Includes instruction manual and remote control (unused). However, as it is a used item, there is no manufacturer's warranty. Product Description Video https://vimeo.com/454240722 Made by Tamuratec, the only domestic manufacturer of medical-grade ozone generators. Color: White Weight: 10.5kg Product Dimensions: W400 x D240 x H680mm Applicable Area: 100㎡ Retail Price: ¥305,800 Maintenance is simple: approximately once a month, remove dust from the filter with a vacuum cleaner or brush, and wipe off any white deposits around the ozone generator with a cloth! You are free from daily maintenance such as water washing or water replacement, which are common with other models. Can be used in hospitals, pharmacies, hotels, offices, large living rooms, banquet halls, and halls. This is a top-of-the-line model with high air purification and ozone sterilization/deodorization functions. High-concentration ozone is used in environments without people for thorough sterilization. Low-concentration ozone can be used in environments with people, sterilizing slowly over time. As a measure against hay fever, it decomposes and removes pollen. For those with hay fever, this is a must-have item for your home during the upcoming pollen season. Insect repellent effects can also be expected. (Cockroaches, bed bugs, etc.) Type: Ozone Sterilization/Deodorization Machine Maximum Applicable Floor Area (Air Purification): Approximately 10 to 60 tatami mats Replacement parts are a HEPA filter and activated carbon filter set for ¥19,800 (tax included). The UV lamp is ¥9,900 (tax included). The manufacturer recommends replacing each after approximately 1 year of use. *If necessary, we can replace the filter before shipping after prior consultation. (In that case, the above parts cost will be added to the price. Please understand.) *When shipping, we will attach the shipping label to the outer box. Please understand. *We do not accept comments for price research purposes. Please provide a specific price when negotiating. We will not answer questions like "How much can you lower the price?"