The product mentioned in the list is a brand new model bought in November, 2020. The machine is in excellent working conditiin providing SPO2 of 94% when running It is small in size and can be moved easily across your home. The machine has faced no issues till date and has had one regular checkup/maintenance. The machine carries new filters as well. I want to sell this product to someone who might be in urgent need of it during this COVID crisis at a reasonable cost