Professional Oxygen Concentrator O2 Recovery OC-8TS Ivory (90% Oxygen Concentration) 8L/min High Flow Type Purchased in October 2021. Stored at home unopened. Unused. Please note that this is not a new item. The cardboard box was opened for image taking and content confirmation. Shipping will be in the original cardboard box and packing materials, size 160. **The one-year product warranty has expired.** ◯ Product Details ◯ This model features high-concentration oxygen output with a high flow rate and 24-hour continuous operation. The following is a description. The top-of-the-line model in the series, this oxygen generator is a high-concentration, high-durability, professional model. It can be used for various purposes, such as oxygen rooms and distribution to multiple users. Suitable for home oxygen therapy and pet use. https://www.excel-plan.com/oc3ts-5ts.html (Seller's website) 【Product Model】OC-8TS 【Dimensions】372 x 340 x 612mm 【Weight】24 kg 【Operating Noise】＜50dB 【PSE Mark Display for Safety Standards】 【Power Consumption】490w 【Functions】Timer function, Error indicator lamp 【Generation Method】PSA method 【Oxygen Flow Rate】1-8L/min 【Oxygen Concentration】90% ± 3% 【Oxygen Pressure kpa】45 ± 10% Instruction manual/warranty (Japanese), power cord, suction device. **The one-year product warranty has expired.** ※ The ⑥ tube described in the instruction manual appears to differ from the actual product. The actual product is a white tube. See image 11. ※ We cannot answer questions regarding the product, such as specifications and performance. Please refer to the product details and the seller's website. ※※ Please consider this item with the understanding that it is unused but not new. No returns or exchanges will be accepted. In the event a return is necessary, the buyer will be responsible for return shipping costs and listing fees. After confirming the product upon return, a refund will be issued after deducting these fees if there are no issues.