carl Y.
I find it to be very handy
I find it to be very handy. Fortunately, I don't need it 24/7 yet. I use it when we walk, yard work, etc. Couldn't do a lot of those things dragging around an O2 tank. Also great for traveling as you can plug it into an AC port and save batteries. My main "complaint" is I wish the batteries lasted longer and weren't so pricey. Also wish Insurance would assist some and don't understand why I can't insure my unit. Overall, I'm very satisfied with my G4.



