Barely used (under a dozen times) ResMed Airsense 11 CPAP machine. This was a top of the line model when I bought it last year. Everything is in mint condition. I've used it about 10 times, we just didn't get along and after moving out of a moldy basement suite, my sleep apnea basically went away. Unit with hose and masks and filter(s) and case was about $3000 new, asking $1200 OBO, no low balls. Comes with 2 brand new nose pillow style masks (med and lg).