CMS 50-DL Pulse Oximeter
First, this simple pulse oximeter is not rated for medical use. However, it’s accurate and a perfect addition to a personal equipment kit. I keep one in my ski patrol kit. It’s lightweight, and as long as fingers are reasonably warm, it’s a great baseline starting point.
Toss it in an emergency personal kit, and have a great little Pulse-ox meter with you whenever you need it!
Available for purchase at Amazon