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.

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.

The display is small and very dark The display is small and very dark, virtually invisible. Therefore there is no use for this instrument. I am very disappointed, and I would return it to you for full refund. Please send me instruction or procedure how to proceed the return

the machine is defective the machine is defective. i do not know where to return it. I emailed the support team but no reply.

Customer service is great Customer service is great. Communication is timely and the product works great. We ordered the parvo tests for dogs. We will order from the company again.