Review (5/5): Respironics EverGo Portable Oxygen Concentator - Extra Battery
OOPS! I ordered the item shown in the photo and it's not the "unit", it's just an "extra battery", which is of no value unless you have the unit, which we don't have. I had no idea "the unit" cost $4,000+ (I guess it's the unit that the "extra battery" is for).
This ad needs to be revised. Showing a photo of "the unit" and selling just the "extra battery" is not the way to go.