Multi-function Oximeter-oximeter can measure multiple parameters such as SPo2/perfusion index (PI)/heart rate at the same time, and has a alert function that can remind you to pay attention to your body at any time. In addition, the pulse oximeter uses a high-definition OLED screen, which allows you to visually see the real-time heart rate dynamic graph. This is a monitoring device suitable for family/office/school.

Accurate and Fast: The fingertip pulse oximeter can quickly monitor your body within 8 seconds, helping you quickly understand your physical condition.The accuracy of the oximeter is ±2%. Because pulse oximeter fingertip measures in real time, the data changes dynamically with the measurements. You can trust it.

Easy-to-use: Click the button to power on the pulse oximeter. The real-time measurement results displays within a few seconds after gripping finger. Whether you are an outdoor sports enthusiast/senior, the oxygen saturation monitor will be a good tool for you.

Low Energy Design: HOLFENRY pulse oximeter only needs 2 AAA batteries to start monitoring. It will automatically shut down after 8 seconds of non-use. *Note: there are 2 batteries included in the pulse oximeter.

What You Get: 1* finger pulse oximeter, 1* lanyard, 2*AAA batteries. Note: this device is only used for sports and aviation purposes, not intended for medical purposes .