The 50D1-Pro Pulse Oximeter is an upgraded model designed for precise and convenient measurement of blood oxygen saturation (SpO₂) and pulse rate. Combining a compact design with advanced functionality, it features clear digital display of SpO₂, pulse rate, bar graph, and optional perfusion index (PI) value. The device also supports optional sound prompts for pulse rate and measurement alerts, along with adjustable screen brightness and automatic orientation for user comfort. With its low-voltage indication, auto standby, and optional auto power-on feature, the 50D1-Pro ensures reliable, efficient, and continuous monitoring. It is ideal for use in hospitals, clinics, home healthcare, and fitness or wellness environments.