Absolutely amazing customer service answer all in every question I had throughout the process and they just answered all my questions and they said stated that even though there was a few mix-ups with the order that it was corrected and processed through very quickly and they stated that I could expect to have my shipment here and my order here by April 27th and sure enough April 27th via FedEx Express delivery came rolling through with the much needed portable oxygen or concentrator machine for my mother-in-law and to see that woman smile when she got it and cry made me cry and I couldn't stop she means the world to us and thank you way for such a great outstanding shopping experience I will be shopping again

Seems to work as was said , i may have to order a more powerful one

a little noisy but over all,fine