SPECIFICATION: • OLED display • Fast and precise • Accurate and FDA & CE Approved • Auto-Power-Off after 8 seconds • Rapid measurement, only 6 seconds to measure the concentration rate and the blood oxygen pulse. • Multi-direction display: multi-directional Rotating display. 4 directions, 6 modes, allow you to view your results in any direction. PRODUCT DESCRIPTION:  Pulse Oximeter is an affordable way and need to check your pulse rate and oxygen saturation levels in the blood. It also shows the Plethysmograph Wave, which ensures accuracy. self-adjusting clamp finger simpler one-button design allows for easy operation. small portable size makes it easy to handle and transport. suitable for everyday use, measure your health at any time.  Blood oxygen saturation: an important indicator reflecting the oxygen status in the body, it is generally believed that the normal value of blood oxygen saturation should be no less than 94 percent, and below 94 percent is considered to be insufficient oxygen supply.  PI refers to the Perfusion Index (PI), and the PI value reflects the pulse blood flow, i.e., the blood Perfusion capability. The greater the blood flow, the greater the pulse component and the greater the PI. Therefore, the measured site (skin, nails, bones, etc.) and the patient's own blood perfusion (arterial blood flow) will affect the PI value. Experience the Difference Now! WHAT IS IN THE BOX: 1 x Fingertip Oximeter (without battery) 1 x Lanyard 1 x English user manual *by aviation restrictions, batteries are not included in the package.