LPOW Bluetooth Pulse Oximeter Fingertip, OLED Display, Blood Oxygen Sa – Lpow
Amazon.com: Fingertip Pulse Oximeter Blood Oxygen Saturation Monitor Pulse Ox, Heart Rate and Fast Spo2 Reading Oxygen Meter with OLED Screen Included Lanyard and 2 X AAA Batteries : Health & Household
Fingertip Oximeter Pulse Oximeter Oxygen Saturation Meter SPO2, PR And PI Reading Blood Pressure Monitor. No Bluetooth. Black Color. - Newegg.com
Finger pulse oximeter with alarm and perfusion index(PI)