This is the 2. It works fine, but my new CPAP manufacturer will not honor warranty if I clean with this method. So, I have gotten use to cleaning manually. Thought I would clear more stuff out of the house and recoup some of my money. It works fine and I enjoyed using it. It is SO convenient. Pun intended. Includes a filter package with THREE unused pairs. Package says 4 but one must/might be in machine.
Make offer.