Quick and Easy Testing: Just insert your finger into the sensor, and the results will appear on the OLED screen in seconds. Its user-friendly design makes it perfect for on-the-go health monitoring.Accommodates Various Finger Sizes: Designed with a smart spring system, it fits different finger sizes for users aged 12 and above, ensuring comfort and accuracy during measurement.Non Invasive for Oxygen Meter: Equipped with a high-performance accelerometer, the sporty Non Invasive for Oxygen Meter meter sense body movement, ensuring high-precision and reliable data.oximeter monitor no prick: Unique LED display provides clear and easy-to-read results. Ideal for sports enthusiasts who need to monitor blood oxygen and pulse rate in real time, such as climbers, skiers and cyclists.Portable Design with Long Battery Life: The device features low power consumption and an auto-shutoff function.