Amazon.com: LPOW Fingertip Pulse Oximeter, Blood Oxygen Saturation Monitor ( SpO2) with Pulse Rate, Perfusion Index with Alarm, OLED Display, Batteries and Lanyard Included : Health & Household
Amazon.com: Innovo Deluxe iP900AP Fingertip Pulse Oximeter with Plethysmograph and Perfusion Index (Off-White with Black) : Health & Household
OxiPro 2 Fingertip Pulse Oximeter
Fingertip Pulse Oximeter Bluetooth Finger Oxygen Monitor HR PI Monitor Smart App | eBay