Finger pulse oximeter with alarm and perfusion index(PI)
Oxygen Plus O+ | Pulse Oximeter
Guardian Angel Lite Continuous Pulse Oximeter | Hopkins Medical Products
This app claims to let users monitor SpO2 levels and pulse rate with your smartphone: Here's how it works | Tech News
The Phone Oximeter. A mobile device that integrates a pulse oximeter... | Download Scientific Diagram
Amazon.com: Fingertip Pulse Oximeter, Blood Oxygen Saturation Monitor (SpO2) with Pulse Rate Measurements and Pulse Bar Graph, Portable Digital Reading LED Display, Batteries and Carry Case Included : Health & Household
How Do Pulse Oximeters Work? A Complete Guide - Infinium Medical