◆This is an oxygen generator from MEDRIS. It's a home health device that can be used for both humans and pets. It is not for medical use. I recently purchased this and used it for two days. The previous owner purchased it on Rakuten in 2025 and used it for 2-3 weeks before storing it. Only the green tube has been used. The other accessories, including the remote control, are unused. The previous owner lost the instruction manual, so I have included a printout of the PDF data they received from the company where they purchased it. Returns are strictly not accepted. Please understand that this is a used item before purchasing. If you have any concerns, please feel free to ask questions before purchasing. #pets #cats #dogs