This machine has pretty low hours I think under 2000 and they last about 10 to 15,000, it retails for about $3000 plus and it does a lot of things stuff in the Bipap tells you how many outs you’re having and it also lowers the pressure when you’re exhaling so it’s a lot more comfortable does not come with a mask, but good ones online or under $100 these days!  Even if you haven’t had a sleep study if you think you have without Mia, this thing will tell you and I’m even willing to let you take it home and try it and check it out cause if you snore at all , tired during days. Apnea is truly life shortening!! I probably had it 15 years before I was diagnosed, but the brain can improve and get better too so do it for yourself if you’ve even thought you might have out instead of scheduling a $4000 sleep study they also have ones you can do at home for about $100 but truly if you just tried out the machine and see if you can handle being a user( bipap is 100 x more palatable option!! Hope she fonds a good home! Its advanced autoSV, designed for the rarer apnea types too!! ( why they retailed over $3 k!!