Pulse Oximeter recommendations

I used a heart rate strap to get my resting heart rate this morning, so I had to get out of bed, put the strap on, return to bed, and wait for my HR to go back down. A friend recommended a pulse oximeter, but I noticed a fair number of Amazon reviews complaining about accuracy, so I thought I’d ask the TR community.

DCRainmaker did a review of the Vivosmart 4

This could be an option for you.