Easy to set up, Easy to use. Easy to move about But very noisy!
Date Added: Thursday 18 September, 2014
as it was advertise this machine is quite, durable, but heavy about 31lbs but its not a big since this machine is for home use and has the wheel to easily move, easy maintenance by replacing just the filter every 2-3 years.
if you love to travel another option is the portable oxygen concentrator (https://www.respshop.com/portable-oxygen-concentrators/respironics-evergo-portable-oxygen-concentrator-p-253.html) that im planing to have one too, but need my doctor prescription...cheers.