Item works as it should
Before, I was always worried about my oxygen level. Now I can keep track of it, and it is a great relief!
After a few uses, the display stopped showing. I tried working with the battery & even replaced it with another. Will need to buy a new Tens 9V battery. Very disappointed!!! Was a gift from my grandson.
how can i review something that is not deliveryd yet?
Device turns on but does nothing beyond that ... Waste of time and money