Features intuitive touch key operation and clear OLED display showing SpO2, pulse rate, Bluetooth status, and pulse strength.
HOLFENRY Ring Pulse Oximeter JKS50G, Continuous Blood Oxygen Monitor with Smart
Ring-50G Oxygen Monitor Fingertip by HOLFENRY | Continuous Pulse Oximeter with A
HOLFENRY JKS50G Ring Pulse Oximeter Oxygen Monitor Digital Display Black
Holfenry Fingertip Pulse Oximeter - Accurate Blood Oxygen Monitor (SpO2) & Heart Rate Tracker with Large OLED Display, Portable Oximeter for Home, Sports & Aviation Use (Batteries & Lanyard Included)
