I need to track mu O2 and mr meter sais to use this, so I did. Not very user friendly for starters. Took seversl ready and its hard to find your reading. All it gives you are day in the week with month above the weeks. Now I am on the hunt for one the will fit what iI think will work. Even the colors are hard to read. Even tho I’m over 75 and my are old too. I still have hard time reading the results.

Mr. Guangdong,I was very excited about using a Bluetooth oxygen meter. The HW device works ok. I am an asthmatic and I need to record and send reports to my doctor. Could you do me a favor and tweak a few features? We’d all greatly appreciate it!1. Can you add an option to be able to change the trend chart from a Black background to a white background with red and blue colors. I cannot print black a background. I believe this would bring better value for the tool/app.2. There’s a defect in the trend whenever the heart rate is off the chart. I think if you just make it null or an empty value, it will just connect the dots making a solid line.

I originally bought another Oximeter for my wife several years ago, and started to use it for myself, but lacked waveform. Therefore, I was never sure how accurate the number that was displayed. The main reason I obtained this unit was this product displayed the plethograph waveform, and as a bonus the data is stored on my phone. As a Critical Care instructor I recommend this item for anyone able to analyze the waveform.

I bought this pulse ox because it had the free app. I have no problem connecting to the device; however, all of the data does not transfer to the app AND, when I try to export data the app just closes. I tried to report a problem; however, when, you select the option to report a problem, it just says the app was free so you are not eligible for a refund??? I didn’t want a refund, I wanted to report a problem. Don’t buy the device if you are wanting it for the app.