This is almost new oxygen concentrator which produces 100% pure oxygen, for oxygen therapy, migraine headache, respiratory Care.
It produces up to 5Liter/min pure oxygen.
I was using it for my migraine headache which was unbearable and just breathing like 15 minutes was the therapy that I was going through and every time was successful but right now I don't have a migraine anymore and I want to get rid of this.
Price is firm please don't lowball me and this is for someone who really needs to use oxygen for therapy.
The only maintenance that it requires is to wash the filter pad which is washable once a month with soap and water.