Bought for my father. He is no longer with us, so I am selling it. You will get all filters and the humidity pot in new condition. These cost 12,000 Taka to purchase. No need to use oxygen cylinders. It supplies oxygen to the patient from the air, so there is no hassle of oxygen refilling. The new price is likely over 1 lakh. I also bought it used. Please check everything thoroughly. Address: Vakurta Bazar, Savar, Dhaka (Area south of Hemayetpur and Aminbazar).