This is a home oxygen concentrator. It was used for a cat with rhinitis. Purchased at the end of November 2025, used for about half a month, with only 9 hours of use. It has a usage time of 8000 hours, and a shelf life of 3 years, so I am listing it in hopes that it will be useful to someone. The retail price is 28,800 yen. **Please note that due to the New Year's holiday season, immediate responses may not be possible depending on the timing.** If you need it urgently, please let me know in the comments. The following is from the seller's description, with ⭐ indicating whether the item was used or not. This product, including accessories, is not for medical use. Product Information Rated Voltage: 100V～ 50/60Hz Rated Input: 150W Oxygen Concentration: 90%±3% (adjustable by flow rate) Oxygen Flow Rate: 1- 7L/min Noise: ≦42 dB(A) Weight: 5.5 kg Size: 305 x 180 X 300mm Zeolite: Can be used for approximately 8000 hours. This device is compatible with both 50Hz and 60Hz, so it can be used throughout Japan. A humidification bottle is not used for oxygen supply to animals. ⭐ I used it because it was winter. 1-year warranty 【Accessories】 1. Oxygen concentrator (including power cord) 1 unit ⭐ Used for 9 hours 2. Atomization equipment 1 set ⭐ Unused 3. Tubing 1 set ⭐ Unused 4. Filters (including sponge) 2 sets ⭐ Unused 5. Fuses 2 sets ← Unused 6. Instruction manual (Japanese, English) 1 book each ⭐ Only Japanese used 7. Remote control 1 unit ← Unused 8. Connection tube 1 set ⭐ Used, will be included after disinfection (see the last image, I used a plastic cup attached to the tube) ⭐ Please check the other images. ⭐ Regarding the rubber cap, be careful not to insert it too far when attaching it, as it will be very difficult to remove. I couldn't remove it and cut the rubber cap. The oxygen flow rate can be adjusted from 1L to 7L per minute, and it continuously supplies concentrated oxygen at a stable rate of up to 90%±3. It has a lightweight design and compact size that a woman can lift, but it achieves high performance comparable to professional-grade concentration, supporting an energetic daily life. ※ This product is a health management device and is not a specific medical device. ※ It is intended for general health maintenance and is not for medical use. Search terms: oxygen chamber, oxygen mask