This is an outstanding little device. In using it I discovered that I have mild sleep apnea. I sought additional medical attention and am now using a dental appliance with good results. The monitor is the perfect thing for self-monitoring at home. Without this I would have no way of verifying that the dental appliance is still doing the job. I think that everyone using a dental appliance for sleep apnea should have one, and as a family physician I recommend it to all my patients who use one. (It did, by the way, correlate very well with the home sleep studies ordered by the physician and the dentist.)

This pulse oximeter is quite accurate. The app can provide plenty of useful info for me to track the situation of my sleep. After using the accessory, I found that it is better and more comfortable to use. Very nice.