Quick and convenient testing: Simply insert your finger into the sensor, and the result will be displayed on the OLED screen within seconds. Its user-friendly design makes it ideal for health monitoring anytime, anywhere. Adaptable to different finger sizes: Featuring a smart spring system, it fits users aged 12 and up with varying finger sizes, ensuring comfort and accuracy during measurement. Non-invasive pulse oximeter: Equipped with a high-performance accelerometer, this sports-oriented non-invasive pulse oximeter senses body movement, ensuring high accuracy and reliability of data. Prick-free pulse oxygenation detection: The unique LED display provides clear and easy-to-read results. Ideal for sports enthusiasts who need to monitor blood oxygen saturation and pulse in real time, such as climbers, skiers, and cyclists. Portable design and long battery life: The device features low power consumption and an automatic shutdown function. Compact and lightweight, with a detachable lanyard, it is ideal for outdoor enthusiasts and daily health monitoring.