1. From 1 to 5, how much do you weigh the appearance of a CPAP machine? (1 means not at all, 5 means a lot)
2.What is your favorite CPAP machine on the market by appearance?(forget about their performance for now)
3.If your machine can take on the look of any the following consumer product, which one is more of your style?
A. minimalist



D. Simple/non-obtrusive


The following questions are more about the operation
4. Do you prefer to have a separate start/stop button, or it can be integrated with a dial or other buttons?
5.Do you prefer the water compartment to locate on the side of the machine for the convenience of inspecting water level, or you do not mind it to be located on the back for a more uniformed front look?
6. How often do you travel with your machine?
7. Where do you place your CPAP machine?
8. What is one thing you like most about your machine? and what do you hate most?
9.Anything you would like to say?
Thank you and hope you sleep well!