Features 1. Prince-100H wrist pulse oximeter is convenient for long-term monitoring. 2. It comes with a large full color OLED display to show SpO2 and pulse rate. 3. It can be switched to PI (Perfusion Index) percentage display. 4. The wrist pulse oximeter allows up to 480 hours data storage and review. 5. PC data management software is used for data transmission and analysis. 6. Optional detachable adult and pediatric probes are available. 7. The pulse oximeter adopts anti-motion technology. 8. It has finger detection function for automatic power on, off. 9. Audio alarm for abnormal readings is available. The alarm limit is adjustable.