Fast and accurate measurement of blood oxygen saturation (SPO2) and pulse rate (PR) with minimal margin of error. Compact and portable design allows for easy use anytime, anywhere. Suitable for all finger sizes, making it ideal for adults, elderly, teenagers, and children. Versatile usage for various activities including sports, running, hiking, and travel aviation. Essential tool for individuals needing to monitor blood oxygen levels and heart rate regularly. The finger is a reliable device that provides quick and precise readings of your blood oxygen saturation and pulse rate. Its user-friendly design ensures that it can be used by people of all ages, making it a perfect health monitoring tool for families. Whether you're an athlete, a traveler, or someone who needs to keep track of their health, this is a must-have accessory. Its small size allows for easy portability, ensuring you can check parameters whenever necessary. Color: As Shown Material: Silicone Package Contents: 2x blood oxygen saturation detector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.