DISAPPOINTED: DISAPPOINTED: The Pulse Oximeter works as expected. However, cannot access the app. Have tried to contact company for support but their email does not even work. For me, the main attraction was to be able to use it with the app.

Damaged box marked :Fragile" The box, marked "Fragile", was so damaged that it has been taped to keep the contents inside.

The unit is very attractive and quiet! The unit is very attractive and seems to work fine. So far, I am impressed with it.

Oxygen recovery therapy The unit is almost perfect except for the oxygen concentration levels at higher liter/minutes decrease significantly. So anything above 3 liter/minute reduces total oxygen per breath cycle. But at this price it’s great.