🔵 CMS50D-BT Upgraded Version with 24-Hour Memory & USB Connectivity for Home & Sports Use - Blue Review

Works well; but has a high current draw, so batteries don't last long even if they're not used much. In contrast, the battery in my old Nonin oximeter lasted half a year with occasional use. I have to take the batteries out or they won't last a month. Data is only saved when prompted via the cumbersome menu, which means you have to be fully awake to operate the menu, so you can't take measurements upon waking, which are important for checking electrolyte balance (primarily potassium), sleep…

I recently had a heart attack and bought this device to monitor SpO2 levels and heart rate while walking. The device arrived on time and without damage. All functions work as advertised. The recording function works, although I haven't tested it for a long time. The downloaded software does not come with clear instructions. I have found that there are 3 programs and the most important is the SpO2 helper. You have used this program to access real-time data and recorded data, which can be viewed…

This device works great as a real time pulse oximeter but good luck trying to get it working as a recorder. The software can now only be downloaded from the Internet (no disc). It will download as an obscure ZIP file. I had to download the latest version of Winzip to extract the files as my decompression application wasn't working. Finally installed the application on the desktop and earned a real-time monitor. I tried writing data and then downloading it to a computer following the…