Medline Soft-Touch Finger Pulse Oximeter HCSM70B with Display | eBay
Amazon.com: Pulse oximeter fingertip with Plethysmograph and Perfusion Index, Portable Blood Oxygen Saturation Monitor for Heart Rate and SpO2 Level, O2 Monitor Finger for Oxygen,Pulse Ox,Oximetro,(Red-Orange) : Health & Household