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

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

So far so good So far so good. Attached to BPAP hose. Came quick. Easy to set up and use. Seems to be well made. I just use the outlet for oxygen at night and don’t use the timer. Set at 88 and mid range .