I received the CMS 500DL fingertip pulse oximeter in exchange for my unbiased review. Loved the purple colors of it. It came with a clip on to attach to the included roped string that made it easy to put around your neck for easy to access without losing it. Runs off 2 AAA batteries that were included. Works with ease and seems as quick as the ones the professionals use and seems just as accurate without the cost they pay.
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