MicroLoop Spirometer (with PC Software)

It worked for a while. I used it professionally. Oddly enough a printout of results only goes to certain types of printers and this function ceased to work all together. I eventually sent the spirometer back to the company because it simply would not print a result to the printer (you can purchase a program for 300 dollars so it will save to your computer) . Everything was fine according to them. The battery goes out a lot and you cannot place it on the cradle charger for charging unless it gets to a critical low which somewhat defeats the purpose of having it ready to go. I bought a new battery charging replacement and it won't charge at all. Might as well have burnt the money spent on this product!