Sharp SHARP LED Ceiling Light Remote Control Night Light Brightness adjustable. Warm color, cool color adjustable. I used this until the end of December 2024, but I'm selling it because I can't use it at my new place. I was using it until recently, so I think it's fine, but I can't offer a guarantee. I don't know how many tatami mats it's for, but I was using it in a 6-tatami room. I have wiped it clean. *I apologize if I missed any dirt or scratches. *This is a used item stored at home. Please refrain from purchasing if you are sensitive to such things. *I try to ship as quickly as possible, but shipping may be delayed due to having a young child. *I may change the shipping method to Rakuraku Mercari. Thank you for your understanding and purchase.